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Unexploded ordnance

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An explosive weapon is a weapon that uses an explosive to project blast and/or fragmentation from a point of detonation .

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137-610: Unexploded ordnance ( UXO , sometimes abbreviated as UO ) and unexploded bombs ( UXBs ) are explosive weapons ( bombs , shells , grenades , land mines , naval mines , cluster munition , and other munitions ) that did not explode when they were deployed and remain at detonative risk, sometimes many decades after they were used or discarded. When unwanted munitions are found, they are sometimes destroyed in controlled explosions, but accidental detonation of even very old explosives might also occur, sometimes with fatal consequences. For example, UXO from World War I continues to be

274-659: A Neutrality Pact in April 1941, and Japan adopted the doctrine of Nanshin-ron , promoted by the Navy, which took its focus southward and eventually led to war with the United States and the Western Allies. In Europe, Germany and Italy were becoming more aggressive. In March 1938, Germany annexed Austria , again provoking little response from other European powers. Encouraged, Hitler began pressing German claims on

411-578: A cautious French probe into the Saarland . The Western Allies also began a naval blockade of Germany , which aimed to damage the country's economy and war effort. Germany responded by ordering U-boat warfare against Allied merchant and warships, which would later escalate into the Battle of the Atlantic . On 8 September, German troops reached the suburbs of Warsaw . The Polish counter-offensive to

548-580: A ban on exploding ammunition under customary international humanitarian law binding on all States. The 1997 Mine Ban Treaty and the 2008 Convention on Cluster Munitions also prohibit types of explosive weapons, anti-personnel landmines and cluster munitions , for states parties to these treaties . The Secretary-General of the United Nations has expressed increasing concern at "the humanitarian impact of explosive weapons, in particular when used in densely populated areas." The President of

685-660: A decade due to the difficult terrain. While unlike many countries in Europe and Asia, the United States has not been subjected to significant aerial bombardment, according to the Department of Defense, "millions of acres" of US territory may contain UXO, discarded military munitions (DMM) and munitions constituents (e.g., explosive compounds). According to United States Environmental Protection Agency documents released in late 2002, UXO at 16,000 domestic inactive military ranges within

822-470: A further 774 sites in assessment. There has been controversy because some lands appropriated by the military during World War II were owned by First Nations , such as 8 square kilometres (2,000 acres) that make up Camp Ipperwash in Ontario, which was given with the understanding that the land would be given back at the end of the war. These lands have required and still need extensive clean-up efforts due to

959-404: A hazard, with poisonous gas filled munitions still a problem. Also, UXO does not always originate from conflict; areas such as military training bases can also hold significant numbers, even after the area has been abandoned. Seventy-eight countries are contaminated by land mines, which kill or maim 15,000–20,000 people every year. Approximately 80% of casualties are civilian, with children being

1096-467: A nearby undeveloped area that became known as " No Man's Land ". When the station was deactivated after the war in 1919, UXO in No Man's Land was abandoned there, and unused projectiles and toxic chemicals were buried in deep, poorly mapped pits. Collegiate athletic fields, businesses and homes were subsequently built in the area. Chemical UXO continues to be periodically found on and near campus, and in 2001,

1233-596: A partnership of NGOs, is calling for immediate action to prevent human suffering from the use of explosive weapons in populated areas. World War II Asia-Pacific Mediterranean and Middle East Other campaigns Coups World War II or the Second World War (1 September 1939 – 2 September 1945) was a global conflict between two coalitions: the Allies and the Axis powers . Nearly all

1370-524: A pretext to initiate the invasion. The first German attack of the war came against the Polish defences at Westerplatte . The United Kingdom responded with an ultimatum for Germany to cease military operations, and on 3 September, after the ultimatum was ignored, Britain and France declared war on Germany. During the Phoney War period, the alliance provided no direct military support to Poland, outside of

1507-781: A pretext to worsen relations. On 29 August, Hitler demanded that a Polish plenipotentiary immediately travel to Berlin to negotiate the handover of Danzig , and to allow a plebiscite in the Polish Corridor in which the German minority would vote on secession. The Poles refused to comply with the German demands, and on the night of 30–31 August in a confrontational meeting with the British ambassador Nevile Henderson , Ribbentrop declared that Germany considered its claims rejected. On 1 September 1939, Germany invaded Poland after having staged several false flag border incidents as

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1644-862: A result of UXO disposal, however. Tokyo and other major cities, including Kobe , Yokohama and Fukuoka , were targeted by several massive air raids during World War II, which left behind numerous UXOs. Shells from Imperial Army and Navy guns also continue to be discovered. Explosive weapon In the common practice of states , explosive weapons are generally the preserve of the military , for use in situations of armed conflict , and are rarely used for purposes of domestic policing . When explosive weapons fail to function as designed they are often left as unexploded ordnance (UXO). Explosive weapons may be subdivided by their method of manufacture into explosive ordnance and improvised explosive devices (IEDs). Certain types of explosive ordnance and many improvised explosive devices are sometimes referred to under

1781-446: A scale as French operations. By July 2016, Algeria reported that it had cleared all major minefields it had identified to clear. Thereafter, Algeria called on French authorities to provide compensation to the families of the 4000 people who are estimated to have been killed by mines, and thousands who have been left disabled from French ordnance. Chad has been dealing with contamination issues stemming from its numerous conflicts between

1918-475: A secret protocol that defined German and Soviet "spheres of influence" (western Poland and Lithuania for Germany; eastern Poland , Finland, Estonia , Latvia and Bessarabia for the Soviet Union), and raised the question of continuing Polish independence. The pact neutralised the possibility of Soviet opposition to a campaign against Poland and assured that Germany would not have to face the prospect of

2055-774: A similar pact and rejected ceding part of its territory to the Soviet Union. The Soviet Union invaded Finland in November 1939, and was subsequently expelled from the League of Nations for this crime of aggression. Despite overwhelming numerical superiority, Soviet military success during the Winter War was modest, and the Finno-Soviet war ended in March 1940 with some Finnish concessions of territory . In June 1940,

2192-585: A smaller portion of unexploded ordnance (UXO) related to cluster munitions continues to affect some regions in the northern part of the country. In recent years, the ongoing jihadist insurgency led by Boko Haram has further complicated the situation. According to the Chadian government, Boko Haram and similar insurgent groups are likely responsible for laying additional mines. These groups are also known for scavenging explosives from pre-existing UXO in order to manufacture improvised explosive devices (IEDs), making

2329-531: A two-front war, as it had in World War   I. Immediately afterwards, Hitler ordered the attack to proceed on 26 August, but upon hearing that the United Kingdom had concluded a formal mutual assistance pact with Poland and that Italy would maintain neutrality, he decided to delay it. In response to British requests for direct negotiations to avoid war, Germany made demands on Poland, which served as

2466-448: Is also covered in UXO from the naval bombardment, and caution would be taken when visiting the ruins. UXO cleanup in the US involves over 40,000 square kilometres (10 million acres) of land and 1,400 different sites. Estimated cleanup costs are tens of billions of dollars. It costs roughly $ 1,000 to demolish a UXO on site. Other costs include surveying and mapping, removing vegetation from

2603-472: Is difficult and hazardous—jarring may detonate the charge. Once uncovered, explosives can often be transported safely to a site where they can be destroyed; if this is not possible, they must be detonated on site which might require hundreds of homes to be evacuated. Unexploded ordnance going back as to the mid-19th century still poses a hazard worldwide, both in current and former combat areas and at military firing ranges. A major problem with unexploded ordnance

2740-429: Is estimated that 22% of Egypt's territory is mined. These mines are from both World War II and wars that Egypt has fought with Israel . Mines contaminate large amounts of agricultural land, slowing development efforts. De-mining is a priority in the country to open up more land for agriculture purposes, oil drilling and mining. Nevertheless, Egypt stresses its need to deploy mines in order to protect its borders. Ethiopia

2877-538: Is still deadly over 150 years later. Union and Confederate troops fired an estimated 1.5 million artillery shells at each other from 1861 to 1865. As many as one in five did not explode. In 1973, during the restoration of Weston Manor , an 18th-century plantation house in Hopewell, Virginia , that was shelled by Union gunboats during the Civil War, a live shell was found embedded in the dining room ceiling. The ball

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3014-400: Is that over the years, the detonator and main charge deteriorate to such an extent, that they frequently become more sensitive to disturbance, and therefore more dangerous to handle. Construction works may disturb unsuspected unexploded bombs, which may then explode. Forest fires may be aggravated if buried ordnance explodes and heat waves, causing the water level to drop severely, may increase

3151-517: Is thought that a grenade may have exploded after being kicked or bumped, setting off hundreds of other grenades and shells. A dramatic example of munitions and explosives of concern (MEC) threat, is the wreck of the SS Richard Montgomery , which was sunk in shallow water about 2.4 kilometres (1.5 miles) from the town of Sheerness and 8.0 kilometres (5 miles) from Southend , still contains 1,400 tons of explosives. In comparison with

3288-508: Is thought to have taken place since then. In 2023, Niger reported that there were just under 0.2 km of contaminated areas near the Madama military base. The spread of conflicts in the Lake Chad and Liptako-Gourma regions has contributed new UXO to the regions, with some insurgencies spreading to Niger. IED's have seen increased use, some victim activated and so indiscriminate. Many of

3425-632: The Algerian war for independence , French forces laid up to 10 million mines on the Morice and Challe lines, on the eastern and western sides of the country. In 2007, France officially handed over maps to Algerian authorities showing the locations of minefields. The lack of these maps had previously severely hampered Algerian demining efforts. Further mines were laid in the Algerian civil war by both warring parties, requiring further demining efforts. However, these mining operations were not on nearly as large

3562-604: The Anglo-German Naval Agreement and the German–Polish declaration of non-aggression . The situation became a crisis in late August as German troops continued to mobilise against the Polish border. On 23 August the Soviet Union signed a non-aggression pact with Germany, after tripartite negotiations for a military alliance between France, the United Kingdom, and Soviet Union had stalled. This pact had

3699-689: The British Empire , with fighting in the Balkans , Mediterranean, and Middle East , the aerial Battle of Britain and the Blitz , and naval Battle of the Atlantic . Through a series of campaigns and treaties, Germany took control of much of continental Europe and formed the Axis alliance with Italy , Japan , and other countries. In June 1941, Germany led the European Axis in an invasion of

3836-581: The German Revolution of 1918–1919 , and a democratic government, later known as the Weimar Republic , was created. The interwar period saw strife between supporters of the new republic and hardline opponents on both the political right and left. Italy, as an Entente ally, had made some post-war territorial gains; however, Italian nationalists were angered that the promises made by the United Kingdom and France to secure Italian entrance into

3973-800: The German invasion of Poland and the United Kingdom and France 's declaration of war on Germany two days later on 3 September 1939. Dates for the beginning of the Pacific War include the start of the Second Sino-Japanese War on 7 July 1937, or the earlier Japanese invasion of Manchuria , on 19 September 1931. Others follow the British historian A. J. P. Taylor , who stated that the Sino-Japanese War and war in Europe and its colonies occurred simultaneously, and

4110-538: The Indian River Lagoon , which contains UXO thought to be left from live bombing runs performed during World War II by pilots from nearby DeLand Naval Air Station . Plum Tree Island National Wildlife Refuge in Poquoson, Virginia , was heavily used as a bombing range by pilots from nearby Langley Air Force Base from 1917 through the 1950s. The 13.26-square-kilometre (3,276-acre) former bombing range

4247-851: The International Committee of the Red Cross (ICRC), Jakob Kellenberger has noted that "ICRC’s key operations in 2009 – in the Gaza Strip and in Sri Lanka – provided stark illustrations of the potentially devastating humanitarian consequences of military operations conducted in densely populated areas, especially when heavy or highly explosive weapons are used." According to the British NGO Action on Armed Violence (AOAV) , when explosive weapons are used in populated areas (towns, villages, residential neighbourhoods)

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4384-576: The Italian mainland , and Allied offensives in the Pacific—cost the Axis powers their initiative and forced them into strategic retreat on all fronts. In 1944, the Western Allies invaded German-occupied France at Normandy , while the Soviet Union regained its territorial losses and pushed Germany and its allies westward. At the same time, Japan suffered reversals in mainland Asia, while the Allies crippled

4521-553: The Japanese Navy and captured key islands . The war in Europe concluded with the liberation of German-occupied territories ; the invasion of Germany by the Western Allies and the Soviet Union, culminating in the fall of Berlin to Soviet troops; Hitler's suicide ; and the German unconditional surrender on 8 May 1945 . Following the refusal of Japan to surrender on the terms of the Potsdam Declaration ,

4658-695: The League of Nations as a force to preserve peace. Both Italy and Ethiopia were member nations, but the League did little when the former clearly violated Article X of the League's Covenant . The United Kingdom and France supported imposing sanctions on Italy for the invasion, but the sanctions were not fully enforced and failed to end the Italian invasion. Italy subsequently dropped its objections to Germany's goal of absorbing Austria . When civil war broke out in Spain, Hitler and Mussolini lent military support to

4795-646: The Libyan National Army (LNA) and government forces around Tripoli escalated, with the LNA surrounding Tripoli in January 2020 and launching constant rocket and artillery attacks. Both sides were also reported to be using weapons indiscriminately against international law and endangering civilian lives. Weapons such as drones from Turkey and China were used, violating the UN arms embargo placed on Libya. When

4932-731: The Nationalist rebels , led by General Francisco Franco . Italy supported the Nationalists to a greater extent than the Nazis: Mussolini sent more than 70,000 ground troops, 6,000 aviation personnel, and 720 aircraft to Spain. The Soviet Union supported the existing government of the Spanish Republic . More than 30,000 foreign volunteers, known as the International Brigades , also fought against

5069-757: The Polisario Front over the Western Sahara . The majority of the contamination is confined to the area around the Moroccan Western Sahara wall . All along the length of the wall (on the Eastern side) runs a minefield, sometimes claimed to be the world's longest continual minefield. During the 1975-91 conflict , the Moroccan army used cluster munitions, unexploded bomblets still kill and maim uneducated citizens to this day. Prior to

5206-690: The Rome–Berlin Axis . A month later, Germany and Japan signed the Anti-Comintern Pact , which Italy joined the following year. The Kuomintang (KMT) party in China launched a unification campaign against regional warlords and nominally unified China in the mid-1920s, but was soon embroiled in a civil war against its former Chinese Communist Party (CCP) allies and new regional warlords . In 1931, an increasingly militaristic Empire of Japan , which had long sought influence in China as

5343-590: The Soviet–Japanese Neutrality Pact in April 1941. By contrast, the Germans were steadily making preparations for an attack on the Soviet Union, massing forces on the Soviet border. Hitler believed that the United Kingdom's refusal to end the war was based on the hope that the United States and the Soviet Union would enter the war against Germany sooner or later. On 31 July 1940, Hitler decided that

5480-598: The Stresa Front in April 1935 in order to contain Germany, a key step towards military globalisation ; however, that June, the United Kingdom made an independent naval agreement with Germany, easing prior restrictions. The Soviet Union, concerned by Germany's goals of capturing vast areas of Eastern Europe , drafted a treaty of mutual assistance with France. Before taking effect, though, the Franco-Soviet pact

5617-709: The Sudetenland , an area of Czechoslovakia with a predominantly ethnic German population. Soon the United Kingdom and France followed the appeasement policy of British Prime Minister Neville Chamberlain and conceded this territory to Germany in the Munich Agreement , which was made against the wishes of the Czechoslovak government, in exchange for a promise of no further territorial demands. Soon afterwards, Germany and Italy forced Czechoslovakia to cede additional territory to Hungary, and Poland annexed

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5754-707: The Tanggu Truce was signed in 1933. Thereafter, Chinese volunteer forces continued the resistance to Japanese aggression in Manchuria , and Chahar and Suiyuan . After the 1936 Xi'an Incident , the Kuomintang and CCP forces agreed on a ceasefire to present a united front to oppose Japan. The Second Italo-Ethiopian War was a brief colonial war that began in October 1935 and ended in May 1936. The war began with

5891-466: The Trans-Olza region of Czechoslovakia. Although all of Germany's stated demands had been satisfied by the agreement, privately Hitler was furious that British interference had prevented him from seizing all of Czechoslovakia in one operation. In subsequent speeches Hitler attacked British and Jewish "war-mongers" and in January 1939 secretly ordered a major build-up of the German navy to challenge British naval supremacy. In March 1939, Germany invaded

6028-506: The Treaty of Craiova . The loss of one-third of Romania's 1939 territory caused a coup against King Carol II, turning Romania into a fascist dictatorship under Marshal Ion Antonescu , with a course set towards the Axis in the hopes of a German guarantee. Meanwhile, German-Soviet political relations and economic co-operation gradually stalled, and both states began preparations for war. In April 1940, Germany invaded Denmark and Norway to protect shipments of iron ore from Sweden , which

6165-462: The US Army Corps of Engineers (USACE), the cleanup of the UXO on the island could take years and cost tens of millions of dollars. In 1917, in response to other nations' extensive use of chemical weapons in World War I , the US Army Chemical Warfare Service (CWS) opened a weapons research laboratory and production facility at American University in Washington, D.C. CWS troops at the station routinely fired incendiary and chemical projectiles into

6302-401: The United Kingdom and France to declare war on Germany. Poland was divided between Germany and the Soviet Union under the Molotov–Ribbentrop Pact , in which they had agreed on " spheres of influence " in Eastern Europe. In 1940, the Soviets annexed the Baltic states and parts of Finland and Romania . After the fall of France in June 1940, the war continued mainly between Germany and

6439-426: The Wehrmacht rapidly advanced to the Channel and cut off the Allied forces in Belgium, trapping the bulk of the Allied armies in a cauldron on the Franco-Belgian border near Lille. The United Kingdom was able to evacuate a significant number of Allied troops from the continent by early June, although they had to abandon almost all their equipment. On 10 June, Italy invaded France , declaring war on both France and

6576-451: The aftermath of World War I and the rise of fascism in Europe and militarism in Japan . Key events leading up to the war included Japan's invasion of Manchuria , the Spanish Civil War , the outbreak of the Second Sino-Japanese War , and Germany's annexations of Austria and the Sudetenland . World War II is generally considered to have begun on 1 September 1939, when Nazi Germany , under Adolf Hitler , invaded Poland , prompting

6713-533: The first Libyan civil war that began in 2011, both government and opposition forces used mines. According to the Libyan mine action centre, 30–35,000 mines were laid; however, these were largely cleared after the downfall of the Gaddafi regime by ex-soldiers. With the downfall of the Gaddafi regime, in March 2011 large ammunition depots were left unatetended, and easily accessible by the civilian population, as well as soldiers and paramilitary forces. The government did not regain control of these depots, and munitions from

6850-404: The reunification of East and West Germany to take place and resolved most post–World War   II issues. No formal peace treaty between Japan and the Soviet Union was ever signed, although the state of war between the two countries was terminated by the Soviet–Japanese Joint Declaration of 1956 , which also restored full diplomatic relations between them. World War I had radically altered

6987-515: The water supply , likewise with preventing agrarian uses such as farming and food distribution . Unexploded ordnance, no matter how old, may explode. It might seem that the dangers of UXO decrease over time, but this is not always the case. Corrosion and damages sustained on impact might make it impossible to defuse UXO safely and also make the consequences harder to predict. Mixed explosive agents might separate or migrate over time and leave contact explosives like nitroglycerine at random places in

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7124-431: The 1960s and the 1980s. A significant portion of this contamination comes from the presence of anti-personnel mines, many of which are believed to have originated from Libyan sources during that period. As of 2020, estimates provided by the Mine Action Review indicated that approximately 10 square kilometers (or 3.9 square miles) of Chadian territory remained contaminated with these dangerous antipersonnel mines. Additionally,

7261-409: The Allies were attempting to cut off . Denmark capitulated after six hours , and despite Allied support , Norway was conquered within two months. British discontent over the Norwegian campaign led to the resignation of Prime Minister Neville Chamberlain , who was replaced by Winston Churchill on 10   May 1940. On the same day, Germany launched an offensive against France . To circumvent

7398-400: The Axis war against the Soviet Union, in Romania's case partially to recapture territory ceded to the Soviet Union . In early June 1940, the Italian Regia Aeronautica attacked and besieged Malta , a British possession. From late summer to early autumn, Italy conquered British Somaliland and made an incursion into British-held Egypt . In October, Italy attacked Greece , but the attack

7535-421: The Blitz , but largely ended in May 1941 after failing to significantly disrupt the British war effort. Using newly captured French ports, the German Navy enjoyed success against an over-extended Royal Navy , using U-boats against British shipping in the Atlantic . The British Home Fleet scored a significant victory on 27   May 1941 by sinking the German battleship Bismarck . In November 1939,

7672-404: The EOD personnel was of a particularly dangerous type because it was fitted with a delayed-action chemical fuze (with an integral anti-handling device ) which had not operated as designed, but had become highly unstable after over 65 years underground. The type of delayed-action fuze in the Göttingen bomb was commonly used: a glass vial containing acetone was smashed after the bomb was released;

7809-405: The European Axis declaring war on the US. Japan conquered much of coastal China and Southeast Asia , but its advances in the Pacific were halted in mid-1942 after its defeat in the naval Battle of Midway ; Germany and Italy were defeated in North Africa and at Stalingrad in the Soviet Union. Key setbacks in 1943—including German defeats on the Eastern Front, the Allied invasions of Sicily and

7946-410: The French possessions of Syria and Lebanon , assisted by the Free French . With the situation in Europe and Asia relatively stable, Germany, Japan, and the Soviet Union made preparations for war. With the Soviets wary of mounting tensions with Germany, and the Japanese planning to take advantage of the European War by seizing resource-rich European possessions in Southeast Asia , the two powers signed

8083-426: The Germans, and the last large operational unit of the Polish Army surrendered on 6   October . Despite the military defeat, Poland never surrendered; instead, it formed the Polish government-in-exile and a clandestine state apparatus remained in occupied Poland. A significant part of Polish military personnel evacuated to Romania and Latvia; many of them later fought against the Axis in other theatres of

8220-401: The Human Rights Watch wrote to the Russian foreign minister, asking to review their findings connecting with the Wagner group operations in laying mines in Tripoli, and clarify on the group's role in the conflict. The Russian authorities did not respond. Major contamination of Mali with UXO stems from the resurgence of conflict in 2012 Mali. Mines and IED's were laid more heavily in the north of

8357-426: The LNA forces withdrew from the east of Tripoli in June 2021, they left behind an unspecified amount of IED's. It was reported by the UN mine action service that booby traps were left in civilian homes with their only purpose being to cause civilian casualties. In January 2020, the UN estimated that Libya was contaminated by up to 20 million mines and pieces of UXO. The Russian paramilitary organisation Wagner which

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8494-450: The Nationalists. Both Germany and the Soviet Union used this proxy war as an opportunity to test in combat their most advanced weapons and tactics. The Nationalists won the civil war in April 1939; Franco, now dictator, remained officially neutral during World War   II but generally favoured the Axis . His greatest collaboration with Germany was the sending of volunteers to fight on the Eastern Front . In July 1937, Japan captured

8631-452: The Royal Navy putting three Italian battleships out of commission after a carrier attack at Taranto , and neutralising several more warships at the Battle of Cape Matapan . Italian defeats prompted Germany to deploy an expeditionary force to North Africa; at the end of March 1941, Rommel 's Afrika Korps launched an offensive which drove back Commonwealth forces. In less than a month, Axis forces advanced to western Egypt and besieged

8768-423: The Soviet Union occupied the entire territories of Estonia, Latvia and Lithuania, as well as the Romanian regions of Bessarabia, Northern Bukovina, and the Hertsa region . In August 1940, Hitler imposed the Second Vienna Award on Romania which led to the transfer of Northern Transylvania to Hungary. In September 1940, Bulgaria demanded Southern Dobruja from Romania with German and Italian support, leading to

8905-421: The Soviet Union , opening the Eastern Front and initially making large territorial gains. Japan aimed to dominate East Asia and the Asia-Pacific , and by 1937 was at war with the Republic of China . In December 1941, Japan attacked American and British territories in Southeast Asia and the Central Pacific , including Pearl Harbor in Hawaii , which resulted in the US and the UK declaring war against Japan, and

9042-418: The Soviet Union and Mongolia . The Japanese doctrine of Hokushin-ron , which emphasised Japan's expansion northward, was favoured by the Imperial Army during this time. This policy would prove difficult to maintain in light of the Japanese defeat at Khalkin Gol in 1939, the ongoing Second Sino-Japanese War and ally Nazi Germany pursuing neutrality with the Soviets. Japan and the Soviet Union eventually signed

9179-575: The Soviet Union should be eliminated and aimed for the conquest of Ukraine , the Baltic states and Byelorussia . However, other senior German officials like Ribbentrop saw an opportunity to create a Euro-Asian bloc against the British Empire by inviting the Soviet Union into the Tripartite Pact. In November 1940, negotiations took place to determine if the Soviet Union would join the pact. The Soviets showed some interest but asked for concessions from Finland, Bulgaria, Turkey, and Japan that Germany considered unacceptable. On 18 December 1940, Hitler issued

9316-402: The US dropped the first atomic bombs on Hiroshima and Nagasaki on 6 and 9 August. Faced with an imminent invasion of the Japanese archipelago , the possibility of further atomic bombings, and the Soviet declaration of war against Japan and its invasion of Manchuria , Japan announced its unconditional surrender on 15 August and signed a surrender document on 2 September 1945 , marking

9453-522: The US and Norway initiated an international five-year demining program, now supported by another 24 countries and the European Union . Both the Colombian military and FARC are taking part in the demining efforts. The program intends to rid Colombia of landmines and other UXO by 2021 and it has been funded with nearly US$ 112 million, including US$ 33 million from the US (as part of the larger US foreign policy Plan Colombia ) and US$ 20 million from Norway. Experts however, have estimated that it will take at least

9590-399: The USACE began cleanup efforts after arsenic was found in soil at the athletic fields. In 2017, the USACE was cautiously excavating a university-owned property in an adjacent neighborhood where investigators believed that a large unmapped cache of mustard gas projectiles was buried. Although comparatively rare, unexploded ordnance from the American Civil War is still occasionally found and

9727-424: The United Kingdom and France guaranteed their support for Polish independence ; when Italy conquered Albania in April 1939, the same guarantee was extended to the Kingdoms of Romania and Greece . Shortly after the Franco - British pledge to Poland, Germany and Italy formalised their own alliance with the Pact of Steel . Hitler accused the United Kingdom and Poland of trying to "encircle" Germany and renounced

9864-542: The United Kingdom attacked on 3   July in an attempt to prevent its seizure by Germany. The air Battle of Britain began in early July with Luftwaffe attacks on shipping and harbours . The German campaign for air superiority started in August but its failure to defeat RAF Fighter Command forced the indefinite postponement of the proposed German invasion of Britain . The German strategic bombing offensive intensified with night attacks on London and other cities in

10001-461: The United Kingdom. The Germans turned south against the weakened French army, and Paris fell to them on 14   June. Eight days later France signed an armistice with Germany ; it was divided into German and Italian occupation zones , and an unoccupied rump state under the Vichy Regime , which, though officially neutral, was generally aligned with Germany. France kept its fleet, which

10138-433: The United States pose an "imminent and substantial" public health risk and could require the largest environmental cleanup ever, at a cost of at least US$ 14  billion . Some individual ranges cover 1,300 square kilometres (500 sq mi), and, taken together, the ranges comprise an area the size of Florida . On Joint Base Cape Cod (JBCC) on Cape Cod, Massachusetts , decades of artillery training have contaminated

10275-660: The United States was assisting China and the Western Allies, and had amended the Neutrality Act to allow "cash and carry" purchases by the Allies. In 1940, following the German capture of Paris, the size of the United States Navy was significantly increased . In September the United States further agreed to a trade of American destroyers for British bases . Still, a large majority of the American public continued to oppose any direct military intervention in

10412-634: The World War II wreck of the SS Kielce which rests at a higher depth, with a smaller load of explosives, it still exploded after a salvaging operation in 1967 and produced a tremor measuring 4.5 on the Richter scale . During the fighting in North Africa between the Axis and Allied forces, much of North Africa was heavily mined to prevent military advances. During the conflict, in addition to

10549-606: The Yellow River ; this manoeuvre bought time for the Chinese to prepare their defences at Wuhan , but the city was taken by October. Japanese military victories did not bring about the collapse of Chinese resistance that Japan had hoped to achieve; instead, the Chinese government relocated inland to Chongqing and continued the war. In the mid-to-late 1930s, Japanese forces in Manchukuo had sporadic border clashes with

10686-403: The acetone was intended, as it dripped downwards, to disintegrate celluloid discs holding back a spring-loaded trigger that would strike a detonator when the discs degraded sufficiently after some minutes or hours. These bombs, when striking soft earth at an angle, often end their trajectory not pointing downwards, so that the acetone did not drip onto and weaken the celluloid; but over many years

10823-517: The capital Nanking in December 1937. After the fall of Nanking, tens or hundreds of thousands of Chinese civilians and disarmed combatants were murdered by the Japanese . In March 1938, Nationalist Chinese forces won their first major victory at Taierzhuang , but then the city of Xuzhou was taken by the Japanese in May. In June 1938, Chinese forces stalled the Japanese advance by flooding

10960-403: The clearance of these remnants of war even more critical for national security. Effective mine clearance and UXO removal are essential not only to reduce the threat of accidental detonation, but also to limit the availability of materials that insurgents might use for their attacks. Egypt is the most heavily mined country in the world (by number) with as many as 22.7 million mines as of 2024. It

11097-403: The conflict well into 1941. In December 1940, Roosevelt accused Hitler of planning world conquest and ruled out any negotiations as useless, calling for the United States to become an " arsenal of democracy " and promoting Lend-Lease programmes of military and humanitarian aid to support the British war effort; Lend-Lease was later extended to the other Allies, including the Soviet Union after it

11234-565: The country's independence from Britain. In 2005, a peace agreement between the rebel forces (mainly the Sudan People's Liberation Movement ) and the government brought an end to fighting, and along with it mine laying. In 2009, the UN Mine Action Service (UNMAS) reported that across 16 Sudanese states, contamination totalled 107 square kilometres (41 sq mi). Despite conflict breaking out in 2011, by early 2023 it

11371-560: The country. The situation deteriorated in 2019; however, the extent of the contamination is unknown, as there has been no clear mapping of the country's minefields. Mine and UXO contamination stems from Mauritania's 1976-78 war in the Western Sahara , while fighting against the Polisario front over the region. UXO is largely concentrated in the north of the country, around urban centres, where heavy fighting took place. Following

11508-526: The creation of a " New Roman Empire ". Adolf Hitler , after an unsuccessful attempt to overthrow the German government in 1923, eventually became the Chancellor of Germany in 1933 when Paul von Hindenburg and the Reichstag appointed him. Following Hindenburg's death in 1934, Hitler proclaimed himself Führer of Germany and abolished democracy, espousing a radical, racially motivated revision of

11645-571: The danger of immersed ordnance. There are countless examples of people tampering with unexploded ordnance that is many years old, often with fatal results. For this reason, it is universally recommended that unexploded ordnance should not be touched or handled by unqualified persons. Instead, the location should be reported to the local police so that bomb disposal or Explosive Ordnance Disposal (EOD) professionals can render it safe. Although professional EOD personnel have expert knowledge, skills and equipment, they are not immune to misfortune because of

11782-470: The discs degraded until the trigger was released and the bomb detonated spontaneously, or when weakened by being jarred. In November 2013, four US Marines were killed by an explosion whilst clearing unexploded ordnance from a firing range at Camp Pendleton . The exact cause is not known, but the Marines had been handing grenades they were collecting to each other, which is permitted but discouraged, and it

11919-757: The dissolution of the Austro-Hungarian, Ottoman, and Russian Empires. To prevent a future world war, the League of Nations was established in 1920 by the Paris Peace Conference . The organisation's primary goals were to prevent armed conflict through collective security, military, and naval disarmament , as well as settling international disputes through peaceful negotiations and arbitration. Despite strong pacifist sentiment after World War   I , irredentist and revanchist nationalism had emerged in several European states. These sentiments were especially marked in Germany because of

12056-662: The end of May completed the German conquest of the Balkans. Partisan warfare subsequently broke out against the Axis occupation of Yugoslavia , which continued until the end of the war. In the Middle East in May, Commonwealth forces quashed an uprising in Iraq which had been supported by German aircraft from bases within Vichy-controlled Syria . Between June and July, British-led forces invaded and occupied

12193-511: The end of the war. World War II changed the political alignment and social structure of the world, and it set the foundation of international relations for the rest of the 20th century and into the 21st century. The United Nations was established to foster international cooperation and prevent conflicts, with the victorious great powers—China, France, the Soviet Union, the UK, and the US—becoming

12330-476: The fact that dunes can rapidly change their location. Although the country was declared mine free in 2018, Mauritania reported the discovery of previously unknown mined areas. As of 2023, an estimated 11.52 square kilometres (4.45 sq mi) of Mauritania was contaminated with mines. The contamination of Moroccan territory is a consequence of the conflict between the Royal Moroccan Army and

12467-557: The final year of World War II. From 1945 until the end of the U.S. occupation of the island in 1972, the Japan Self-Defense Forces (JSDF) and the US military disposed of 5,500 tons of UXO. Over 30,000 UXO disposal operations have been conducted on Okinawa by the JSDF since 1972, and it is estimated it could take close to a century to dispose of the remaining UXOs on the islands. No injuries or deaths have been reported as

12604-575: The first step of what its government saw as the country's right to rule Asia , staged the Mukden incident as a pretext to invade Manchuria and establish the puppet state of Manchukuo . China appealed to the League of Nations to stop the Japanese invasion of Manchuria. Japan withdrew from the League of Nations after being condemned for its incursion into Manchuria. The two nations then fought several battles, in Shanghai , Rehe and Hebei , until

12741-864: The former Chinese imperial capital of Peking after instigating the Marco Polo Bridge incident , which culminated in the Japanese campaign to invade all of China. The Soviets quickly signed a non-aggression pact with China to lend materiel support, effectively ending China's prior cooperation with Germany . From September to November, the Japanese attacked Taiyuan , engaged the Kuomintang Army around Xinkou , and fought Communist forces in Pingxingguan . Generalissimo Chiang Kai-shek deployed his best army to defend Shanghai , but after three months of fighting, Shanghai fell. The Japanese continued to push Chinese forces back, capturing

12878-585: The general rules of international humanitarian law governing the conduct of hostilities apply to the use of all types of explosive weapons as means or methods of warfare. Taken in combination, Amended Protocol II and Protocol V to the United Nations Convention on Certain Conventional Weapons establish a responsibility on the users of explosive weapons to record and retain information on their use of such weapons (including

13015-451: The generic term bomb . Certain types of explosive weapons may be categorized as light weapons (e.g. grenades , grenade launchers , rocket launchers , anti-tank guided missile launchers , man-portable air-defense systems , and mortars of calibers of less than 100 mm). Many explosive weapons, such as aerial bombs , multiple rocket launchers , artillery , and larger mortars, are categorized as heavy weapons. In armed conflict,

13152-790: The inherent dangers: in June 2010, construction workers in Göttingen, Germany discovered an Allied 500-kilogram (1,100 lb) bomb dating from World War II buried approximately 7 metres (23 ft) below the ground. German EOD experts were notified and attended the scene. Whilst residents living nearby were being evacuated and the EOD personnel were preparing to disarm the bomb, it detonated , killing three of them and severely injuring six others. The dead and injured each had over 20 years of hands-on experience, and had previously rendered safe between 600 and 700 unexploded bombs. The bomb which killed and injured

13289-525: The invasion of the Ethiopian Empire (also known as Abyssinia ) by the armed forces of the Kingdom of Italy ( Regno d'Italia ), which was launched from Italian Somaliland and Eritrea . The war resulted in the military occupation of Ethiopia and its annexation into the newly created colony of Italian East Africa ( Africa Orientale Italiana , or AOI); in addition it exposed the weakness of

13426-496: The island were seriously injured when a 11-kilogram (25 lb) practice bomb exploded. As of 2007, the US military had not removed a single bomb from the island, which is adjacent to the Poquoson Flats, a popular destination for fishermen and recreational boaters. Signs placed offshore to warn the public of the hidden danger posed by buried UXO have not been consistently replaced after being blown down by storms. According to

13563-436: The location of use and the type and quantity of weapons used), to provide such information to parties in control of territory that may be affected by UXO , and to assist with the removal of this threat. Certain types of explosive weapons have been subject to prohibition in international treaties. The Saint Petersburg Declaration of 1868 prohibits the use of certain explosive rifle projectiles. This prohibition has evolved into

13700-470: The millions of mines that were placed, some of the millions of shells which were fired did not explode, and remain deadly to this day. Algeria , Egypt , Libya and Tunisia are all affected by this issue, with civilians being injured and killed every year. UXO also slows progress, with areas having to be demined before being developed. Algeria has been contaminated with large numbers of mines and UXO throughout several wars, starting from World War II. During

13837-675: The mines used by insurgencies such as Boko Haram are used to target military convoys and vehicles, however inevitably there are civilian casualties. Between 2016 and the end of 2022, the National Commission for the Collection and Control of Illicit weapons reported 183 explosive ordnance incidents, killing 203 and wounding 204. 80% of the incidents occurred in the Tillabéri and Diffa regions. Sudan's mine contamination largely stems from its civil war and other wars since

13974-544: The mines. All departments of Colombia are affected, but Antioquia , where the city of Medellín is located, holds the largest amounts. After Afghanistan, Colombia has the second-highest number of landmine casualties, with more than 11,500 people killed or injured by landmines since 1990, according to Colombian government figures. In September 2012, the Colombian peace process began officially in Havana and in August 2016,

14111-609: The most affected age group. An average estimate of 50% of deaths occur within hours of the blast. In recent years, mines have been used increasingly as weapons of terror; especially against local populations, such as in the Syrian civil war . In addition to the obvious danger of explosion, buried UXO can cause environmental contamination. In some heavily used military training areas, munitions-related chemicals such as explosives and perchlorate (a component of pyrotechnics and rocket fuel) may enter soil and groundwater, thereby contaminating

14248-439: The only drinking water for thousands of surrounding residents. A costly UXO recovery effort is under way. UXO on US military bases has caused problems for transferring and restoring Base Realignment and Closure (BRAC) land. The Environmental Protection Agency 's efforts to commercialize former munitions testing grounds are complicated by UXO, making investments and development risky. The area around Fort St. Philip , Louisiana

14385-450: The overwhelming majority (91% in 2012) of direct casualties are civilians . Action on Armed Violence has also charted a dramatic rise in the use of suicide bombing and improvised explosive devices globally. Their data showed the number of civilians killed or injured by car and suicide bombs and other improvised explosive devices rising by 70 percent in the three years to 2013. The International Network on Explosive Weapons (INEW) ,

14522-502: The permanent members of its security council . The Soviet Union and the United States emerged as rival superpowers , setting the stage for the Cold War . In the wake of European devastation, the influence of its great powers waned, triggering the decolonisation of Africa and Asia . Most countries whose industries had been damaged moved towards economic recovery and expansion . World War II began in Europe on 1 September 1939 with

14659-589: The political European map with the defeat of the Central Powers —including Austria-Hungary , Germany , Bulgaria , and the Ottoman Empire —and the 1917 Bolshevik seizure of power in Russia , which led to the founding of the Soviet Union. Meanwhile, the victorious Allies of World War I , such as France, Belgium, Italy, Romania, and Greece, gained territory, and new nation-states were created out of

14796-599: The port of Tobruk . By late March 1941, Bulgaria and Yugoslavia signed the Tripartite Pact ; however, the Yugoslav government was overthrown two days later by pro-British nationalists. Germany and Italy responded with simultaneous invasions of both Yugoslavia and Greece , commencing on 6 April 1941; both nations were forced to surrender within the month. The airborne invasion of the Greek island of Crete at

14933-431: The possible presence of UXO. During the long Colombian conflict that began around 1964, a large number of landmines were deployed in rural areas across Colombia. The landmines are homemade and were placed primarily during the last 25 years of the conflict, hindering rural development significantly. The rebel groups of Revolutionary Armed Forces of Colombia (FARC) and the smaller ELN are usually blamed for having placed

15070-722: The remainder of Czechoslovakia and subsequently split it into the German Protectorate of Bohemia and Moravia and a pro-German client state , the Slovak Republic . Hitler also delivered an ultimatum to Lithuania on 20 March 1939, forcing the concession of the Klaipėda Region , formerly the German Memelland . Greatly alarmed and with Hitler making further demands on the Free City of Danzig ,

15207-462: The resumption of hostilities in November 2020, both the UN and the Moroccan army claimed to have destroyed tens of thousands of land mines, and cleared hundreds of square kilometres of land. In 2018 Niger reported a known contaminated area near Madama military base, totalling just over 0.2 square kilometres (0.077 sq mi). Clearance of approximately 18,000 square metres (190,000 sq ft) took place up to March 2020, however no clearance

15344-536: The same depots were spread across the country. Several of the stores also exploded, spreading dangerous ordnance over a wide area. Many military vehicles were also destroyed in fighting all across the country, and these often contained ordnance in an unstable condition. With hostilities breaking out again in 2014, there were reports of both landmines and IED's being laid by opposition groups, particularly in urban areas. This complicated clearance operations as these areas are often densely populated. In 2019, clashes between

15481-506: The shell. Sometimes components of the original explosives, in the presence of moisture, can form new explosive compounds with the metals in the shells like picrates that can leave a shell highly explosive, even when it is defused and the detonator destroyed or removed. Even if unexploded ordnance does not explode, environmental pollutants are released as it degrades. The toxic compounds and heavy metals can contaminate water and soil over time. Recovery, particularly of deeply-buried projectiles,

15618-462: The significant territorial, colonial, and financial losses imposed by the Treaty of Versailles . Under the treaty, Germany lost around 13 percent of its home territory and all its overseas possessions , while German annexation of other states was prohibited, reparations were imposed, and limits were placed on the size and capability of the country's armed forces . The German Empire was dissolved in

15755-460: The site, transportation, and personnel to manually detect UXOs with metal detectors. Searching for UXOs is tedious work and often 100 holes are dug to every 1 UXO found. Other methods of finding UXOs include digital geophysics detection with land and airborne systems. In December 2007, UXO was discovered in new development areas outside Orlando, Florida , and construction had to be halted. Other areas nearby are also affected; for example boaters avoid

15892-498: The start or prelude to World War II. The exact date of the war's end also is not universally agreed upon. It was generally accepted at the time that the war ended with the armistice of 15 August 1945 ( V-J Day ), rather than with the formal surrender of Japan on 2 September 1945, which officially ended the war in Asia . A peace treaty between Japan and the Allies was signed in 1951. A 1990 treaty regarding Germany's future allowed

16029-593: The strong Maginot Line fortifications on the Franco-German border, Germany directed its attack at the neutral nations of Belgium , the Netherlands , and Luxembourg . The Germans carried out a flanking manoeuvre through the Ardennes region, which was mistakenly perceived by the Allies as an impenetrable natural barrier against armoured vehicles. By successfully implementing new Blitzkrieg tactics,

16166-645: The two wars became World War II in 1941. Other proposed starting dates for World War II include the Italian invasion of Abyssinia on 3 October 1935. The British historian Antony Beevor views the beginning of World War   II as the Battles of Khalkhin Gol fought between Japan and the forces of Mongolia and the Soviet Union from May to September 1939. Others view the Spanish Civil War as

16303-410: The urbanisation of 70% of the country's nomadic population, urban expansion has strayed into mine belts. As many of these nomads still follow pastoral practises, valuable livestock and people can stray into contact with mines. Despite this, people are unwilling to move due to the fact that Northern Mauritania is known as the best place to raise camels. It is also difficult to precisely mark mines, due to

16440-513: The war were not fulfilled in the peace settlement. From 1922 to 1925, the Fascist movement led by Benito Mussolini seized power in Italy with a nationalist, totalitarian , and class collaborationist agenda that abolished representative democracy, repressed socialist, left-wing, and liberal forces, and pursued an aggressive expansionist foreign policy aimed at making Italy a world power, promising

16577-475: The war. Germany annexed western Poland and occupied central Poland ; the Soviet Union annexed eastern Poland ; small shares of Polish territory were transferred to Lithuania and Slovakia . On 6 October, Hitler made a public peace overture to the United Kingdom and France but said that the future of Poland was to be determined exclusively by Germany and the Soviet Union. The proposal was rejected and Hitler ordered an immediate offensive against France, which

16714-512: The west halted the German advance for several days, but it was outflanked and encircled by the Wehrmacht . Remnants of the Polish army broke through to besieged Warsaw . On 17 September 1939, two days after signing a cease-fire with Japan , the Soviet Union invaded Poland under the supposed pretext that the Polish state had ceased to exist. On 27 September, the Warsaw garrison surrendered to

16851-707: The world order , and soon began a massive rearmament campaign . France, seeking to secure its alliance with Italy, allowed Italy a free hand in Ethiopia , which Italy desired as a colonial possession. The situation was aggravated in early 1935 when the Territory of the Saar Basin was legally reunited with Germany, and Hitler repudiated the Treaty of Versailles, accelerated his rearmament programme, and introduced conscription. The United Kingdom, France and Italy formed

16988-439: The world's countries —including all the great powers —participated, with many investing all available economic, industrial, and scientific capabilities in pursuit of total war , blurring the distinction between military and civilian resources. Tanks and aircraft played major roles , with the latter enabling the strategic bombing of population centres and delivery of the only two nuclear weapons ever used in war. World War II

17125-614: Was invaded by Germany. The United States started strategic planning to prepare for a full-scale offensive against Germany. At the end of September 1940, the Tripartite Pact formally united Japan, Italy, and Germany as the Axis powers . The Tripartite Pact stipulated that any country—with the exception of the Soviet Union—that attacked any Axis Power would be forced to go to war against all three. The Axis expanded in November 1940 when Hungary , Slovakia , and Romania joined. Romania and Hungary later made major contributions to

17262-559: Was attempting to disarm in the driveway of his home near Richmond, Virginia . The explosion sent a chunk of shrapnel crashing into a house four hundred metres ( 1 ⁄ 4  mi) away. According to Alaska State Troopers , an unexploded aerial bomb, found at a home off Warner Road, was safely detonated by Fort Wainwright soldiers on September 19, 2019. Thousands of tons of UXOs remain buried across Japan, particularly in Okinawa , where over 200,000 tons of ordnance were dropped during

17399-552: Was disarmed and is shown to visitors to the plantation. In late March 2008, a 20-kilogram (44 lb), 20-centimetre (8 in) mortar shell was uncovered at the Petersburg National Battlefield , the site of a 292-day siege. The shell was taken to the city landfill where it was safely detonated by ordnance disposal experts. Also in 2008, a Civil War enthusiast was killed in the explosion of a 23-centimetre (9 in), 34-kilogram (75 lb) naval shell he

17536-599: Was dumped along the country's eastern and western coasts at sites selected by the Canadian military. Other UXO in Canada is found on sites used by the Canadian military for operations, training and weapons tests. These sites are labeled under the "legacy sites" program created in 2005 to identify areas and quantify risk due to UXO. As of 2019, the Department of National Defence has confirmed 62 locations as legacy sites, with

17673-516: Was first contaminated with UXO in World War II, in areas such as Tobruk , where heavy fighting took place. The contamination from World War II is largely unexploded ordnance and anti vehicle mines . Libya was contaminated during its wars with Egypt and Chad , and it is also believed that the border with Tunisia is contaminated. While Muammar Gaddafi was in power in Libya, mines were placed around military facilities and other key infrastructure. In

17810-653: Was heavily mined in World War II , the Eritrean War of Independence , the Eritrean-Ethiopian War , and the Tigray War . The most heavily affected regions are Afar , Somali , and Tigray regions which have seen repeated conflict. A study in 2004 found that landmines and UXO affected an estimated 1.5 million people. Between 2000 and 2004, they caused 588 fatalities and 1,300 injuries. Libya

17947-657: Was operating in the area, also reportedly left munitions and mines in southern Tripoli. Human Rights Watch said that the Wagner Group and other militias left behind "enormous" amounts of ordnance. In August 2021, the BBC reported receiving an electronic tablet containing information on Wagner operators role in laying mines. Deminers in Tripoli reported finding documents in Russian in rooms that they were demining. On 24 May 2022,

18084-456: Was postponed until the spring of 1940 due to bad weather. After the outbreak of war in Poland, Stalin threatened Estonia , Latvia , and Lithuania with military invasion, forcing the three Baltic countries to sign pacts allowing the creation of Soviet military bases in these countries; in October 1939, significant Soviet military contingents were moved there. Finland refused to sign

18221-665: Was reported that only just over 13 km (5.0 sq mi) of Sudanese land was contaminated with mines, and slightly more contaminated with ERW. In April 2023, heavy fighting broke out between the Sudanese Armed Forces (SAF), and the Rapid Support Forces , (RSF), a paramilitary organisation. The SAF alleges that the RSF has laid mines, but as of April 2024 no evidence has emerged to support that claim. After World War II, much unused ordnance in Canada

18358-772: Was repulsed with heavy Italian casualties; the campaign ended within months with minor territorial changes. To assist Italy and prevent Britain from gaining a foothold, Germany prepared to invade the Balkans, which would threaten Romanian oil fields and strike against British dominance of the Mediterranean. In December 1940, British Empire forces began counter-offensives against Italian forces in Egypt and Italian East Africa . The offensives were successful; by early February 1941, Italy had lost control of eastern Libya, and large numbers of Italian troops had been taken prisoner. The Italian Navy also suffered significant defeats, with

18495-441: Was required to go through the bureaucracy of the League of Nations, which rendered it essentially toothless. The United States, concerned with events in Europe and Asia, passed the Neutrality Act in August of the same year. Hitler defied the Versailles and Locarno Treaties by remilitarising the Rhineland in March 1936, encountering little opposition due to the policy of appeasement . In October 1936, Germany and Italy formed

18632-480: Was the deadliest conflict in history, resulting in 70 to 85 million deaths , more than half being civilians. Millions died in genocides , including the Holocaust of European Jews, as well as from massacres, starvation, and disease. Following the Allied powers' victory, Germany , Austria , Japan , and Korea were occupied, and war crimes tribunals were conducted against German and Japanese leaders . The causes of World War II included unresolved tensions in

18769-418: Was transferred to the US Fish and Wildlife Service in 1972. Air Force records show that 140 tonnes (300,000 lb) of various-sized bombs were dropped in just one exercise in December 1938. Because the area is alternately marshy or sandy, many of the bombs did not explode, and were partly or completely buried in mud and sand or lie in the surf just offshore. In 1958, three teenage boys who landed their boat on

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