116-473: Asia-Pacific Mediterranean and Middle East Other campaigns Coups Luxembourg The Netherlands Belgium France Britain 1941–1943 1944–1945 Germany Strategic campaigns The Battle of Britain ( German : Luftschlacht um England , lit. 'air battle for England') was a military campaign of the Second World War , in which
232-462: A Europe first stance, giving first priority to defeating Nazi Germany. The Japanese had great difficulty replacing their losses in ships and aircraft, while American factories and shipyards produced ever increasing numbers of both. Fighting included some of the largest naval battles in history and massive Allied air raids over Japan , as well as the atomic bombings of Hiroshima and Nagasaki . Japan surrendered unconditionally on 15 August 1945 and
348-781: A bombing of the city of Darwin on 19 February, which killed at least 243 people. At the Battle of the Java Sea in late February and early March, the IJN defeated the main ABDA naval force, under Admiral Karel Doorman . The Dutch East Indies campaign ended with the surrender of Allied forces on Java and Sumatra. In March and April, an IJN carrier force launched a raid into the Indian Ocean . British Royal Navy bases in Ceylon were hit and
464-513: A 250 kg bomb underneath the fuselage, the later model arriving during the battle. The Bf 109, unlike the Stuka , could fight on equal terms with RAF fighters after releasing its ordnance . At the start of the battle, the twin-engined Messerschmitt Bf 110C long-range Zerstörer ("Destroyer") was also expected to engage in air-to-air combat while escorting the Luftwaffe bomber fleet. Although
580-537: A base for the successful prosecution of the air and sea war against England". On 29 November, OKW "Directive No. 9 – Instructions For Warfare Against The Economy Of The Enemy" stated that once this coastline had been secured, the Luftwaffe together with the Kriegsmarine (German Navy) was to blockade UK ports with sea mines. They were to attack shipping and warships and make air attacks on shore installations and industrial production. This directive remained in force in
696-500: A defensive perimeter to absorb and defeat Allied counterattacks; Japanese decisonmakers believed such a military situation would lead to a negotiated peace that would preserve Japanese territorial gains. Japanese planning divided the early war into two operational phases. The First Operational Phase was further divided into three separate parts in which the major objectives of the Philippines, British Malaya, Borneo, Burma, Rabaul and
812-746: A four-month campaign. The Japanese achieved major military victories, but world opinion—in particular in the US—was hostile to Japan's invasion, especially after the Panay incident . In addition, the Japanese had failed to destroy the Chinese army, which continued to resist from the new Nationalist capital in Chongqing , or in the case of the Communists, Yan'an . In 1939, Japanese forces tried to push into
928-559: A halt. The Japanese media, influenced by military propagandists, began to refer to the embargoes as the " ABCD line " ("American-British-Chinese-Dutch"). The Japanese Imperial General Headquarters (GHQ) began planning for a war with the Western powers in April or May 1941. Japan increased its naval budget and placed large formations of the Army, along with their attached air components, under
1044-554: A last resort once the British economy had been damaged and the Luftwaffe had full air superiority. On 2 July, OKW requested preliminary plans. In Britain, Churchill described "the great invasion scare" as "serving a very useful purpose" by "keeping every man and woman tuned to a high pitch of readiness". Historian Len Deighton stated that on 10 July Churchill advised the War Cabinet that invasion could be ignored, as it "would be
1160-475: A major armed clash in January 1941 , effectively ending their co-operation. Japanese strategic bombing efforts mostly targeted large Chinese cities such as Shanghai, Wuhan , and Chongqing , with around 5,000 raids from February 1938 to August 1943. Japan's strategic bombing campaigns killed between 260,000 and 350,934 non-combatants . As early as 1935, Japanese military strategists had concluded that
1276-699: A military alliance with Germany and Italy, becoming one of the three main Axis Powers . The war entered a new phase with Japanese defeats at the Battle of Suixian–Zaoyang , the 1st Battle of Changsha , the Battle of Kunlun Pass and the Battle of Zaoyi . After these victories, Chinese nationalist forces launched a large-scale counter-offensive in early 1940; however, due to a lack of military-industrial capacity, they were repulsed in late March 1940. In August 1940, Chinese communists launched an offensive in Central China ; in retaliation, Japan instituted
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#17327768501151392-566: A more capable opponent than any it had previously met: a sizeable, highly coordinated, well-supplied, modern air force. The Luftwaffe's Messerschmitt Bf 109E and Bf 110C fought against the RAF's workhorse Hurricane Mk I and the less numerous Spitfire Mk I ; Hurricanes outnumbered Spitfires in RAF Fighter Command by about 2:1 when war broke out. The Bf 109E had a better climb rate and was up to 40 mph faster in level flight than
1508-527: A most hazardous and suicidal operation". On 11 July, Hitler agreed with Raeder that invasion would be a last resort, and the Luftwaffe advised that gaining air superiority would take 14 to 28 days. Hitler met his army chiefs, von Brauchitsch and Halder , at the Berchtesgaden on 13 July where they presented detailed plans on the assumption that the navy would provide safe transport. Von Brauchitsch and Halder were surprised that Hitler took no interest in
1624-457: A service that had been undergoing the most rapid of expansions during the British rearmament programs of the late 1930s. Newall gave way in 1940 to Air Chief Marshal Sir Charles Portal , who led the service for the rest of the war. Portal was a tireless defender of the RAF and highly capable in administration and strategy. Postwar the RAF was reoriented to perform the dual roles of defending the shrinking British Empire and possibly fighting against
1740-445: A similar proposal; when rebuffed, he told Churchill that interference with German domination would mean war. To Hitler's great annoyance, all his diplomacy failed to stop Britain from declaring war when he invaded Poland. During the fall of France, he repeatedly discussed peace efforts with his generals. When Churchill came to power, there was still wide support for Halifax, who as Foreign Secretary openly argued for peace negotiations in
1856-444: A study (in 1939) on the possibility of an invasion of Britain and concluded that it also required naval superiority. The Luftwaffe said invasion could only be "the final act in an already victorious war." Hitler first discussed the idea of an invasion at a 21 May 1940 meeting with Grand Admiral Erich Raeder, who stressed the difficulties and his own preference for a blockade. OKW Chief of Staff Jodl's 30 June report described invasion as
1972-640: A surprise to the Jagdwaffe , although the German pilots retained a strong belief that the 109 was the superior fighter. The British fighters were equipped with eight Browning .303 (7.7mm) machine guns while most Bf 109Es had two 20mm cannons supplemented by two 7.92mm machine guns. The 20mm cannons were much more effective than the .303; during the Battle it was not unknown for damaged German bombers to limp home with up to two hundred .303 hits. At some altitudes,
2088-606: A waste of strategic effort. The defeat of France in June 1940 introduced the prospect for the first time of independent air action against Britain. A July Fliegercorps I paper asserted that Germany was by definition an air power: "Its chief weapon against England is the Air Force, then the Navy, followed by the landing forces and the Army." In 1940, the Luftwaffe would undertake a " strategic offensive ... on its own and independent of
2204-589: Is also defeated, the fundamental conditions for a successful war against England will have been secured. England can then be blockaded from Western France at close quarters by the Air Force, while the Navy with its submarines extend the range of the blockade." When war commenced, Hitler and the OKW ( Oberkommando der Wehrmacht or "High Command of the Armed Forces") issued a series of directives ordering, planning and stating strategic objectives. "Directive No. 1 for
2320-900: Is also used, referring to the period from the Mukden Incident of 1931 through 1945. The major Allied participants were China , the United States and the British Empire . China had already been engaged in a war against Japan since 1937 . The US and its territories, including the Philippine Commonwealth , entered the war after being attacked by Japan . The British Empire was also a major belligerent consisting of British troops along with colonial troops from India as well as from Burma , Malaya , Fiji , Tonga ; in addition to troops from Australia , New Zealand and Canada . The Dutch government-in-exile (as
2436-575: Is reserved to me. Attacks on the English homeland are to be prepared, bearing in mind that inconclusive results with insufficient forces are to be avoided in all circumstances. Both France and the UK declared war on Germany; on 9 October, Hitler's "Directive No. 6" planned the offensive to defeat these allies and "win as much territory as possible in the Netherlands, Belgium, and northern France to serve as
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#17327768501152552-525: The This was their finest hour speech delivered by Winston Churchill in the House of Commons on 18 June, more than three weeks prior to the generally accepted date for the start of the battle: ... What General Weygand called the Battle of France is over. I expect that the battle of Britain is about to begin. Upon this battle depends the survival of Christian civilization. Upon it depends our own British life and
2668-886: The Asia–Pacific War or the Pacific Theater , was the theater of World War II that was fought in eastern Asia, the Pacific Ocean , the Indian Ocean , and Oceania . It was geographically the largest theater of the war, including the Pacific Ocean theater , the South West Pacific theater , the Second Sino-Japanese War , and the Soviet–Japanese War in the last few months of the war. The Second Sino-Japanese War between
2784-807: The Declaration by United Nations on 1 January 1942, the Allied governments appointed the British General Archibald Wavell to the American-British-Dutch-Australian Command (ABDACOM), a supreme command for Allied forces in Southeast Asia. This gave Wavell nominal control of a huge force, albeit one that was thinly spread across a vast area, from Burma to the Philippines to northern Australia. Other regions, including India, Hawaii, and
2900-687: The Empire of Japan and the Republic of China had been in progress since 7 July 1937, with hostilities dating back to 1931 with the Japanese invasion of Manchuria . However, it is more widely accepted that the Pacific War itself began on 7 December (8 December Japanese time) 1941, when the Japanese simultaneously attacked American military bases in Hawaii , Wake Island , Guam , and the Philippines ,
3016-753: The Khmer Issarak , and the Hukbalahap . The Soviet Union fought two short, undeclared border conflicts with Japan in 1938 and again in 1939 , then remained neutral through the Soviet–Japanese Neutrality Pact of April 1941, until August 1945 when it (and Mongolia ) joined the rest of the Allies and invaded the territory of Manchukuo , China, Inner Mongolia , the Japanese protectorate of Korea and Japanese-claimed territory such as South Sakhalin . Mexico provided air support in
3132-1016: The Kwantung Army to oversee its occupation of Manchukuo and the China Expeditionary Army during the Second Sino-Japanese War, created the Southern Expeditionary Army Group at the outset of its conquests of South East Asia. This headquarters controlled the bulk of the Japanese Army formations which opposed the Western Allies in the Pacific and South East Asia. In 1931, without declaring war, Japan invaded Manchuria , seeking raw materials to fuel its growing industrial economy. By 1937, Japan controlled Manchuria and
3248-526: The Luftwaffe was formally announced, with Walther Wever as Chief of Staff. The 1935 Luftwaffe doctrine for "Conduct of Air War" ( Luftkriegführung ) set air power within the overall military strategy, with critical tasks of attaining (local and temporary) air superiority and providing battlefield support for army and naval forces. Strategic bombing of industries and transport could be decisive longer-term options, dependent on opportunity or preparations by
3364-671: The Royal Air Force (RAF) and the Fleet Air Arm (FAA) of the Royal Navy defended the United Kingdom (UK) against large-scale attacks by Nazi Germany 's air force, the Luftwaffe . It was the first major military campaign fought entirely by air forces. The British officially recognise the battle's duration as being from 10 July until 31 October 1940, which overlaps the period of large-scale night attacks known as
3480-631: The Royal Flying Corps while Sir William Dickson was commissioned into the Royal Naval Air Service . In 1956 Sir Dermot Boyle became the first CAS to have originally been commissioned in the RAF. Until 2023, every occupant of the post originally commissioned in the RAF was a qualified pilot. The first non-pilot to be appointed to the role is Sir Richard Knighton , who joined the RAF as an engineer, and who took up post in June 2023. The following list gives details of
3596-654: The South West Pacific . US sources refer to two theaters within the Pacific War: the Pacific theater and the China Burma India Theater (CBI). However, these were not operational commands. In the Pacific, the Allies divided operational control of their forces between two supreme commands, known as Pacific Ocean Areas and Southwest Pacific Area . The Imperial Japanese Navy (IJN) did not integrate its units into permanent theater commands. The Imperial Japanese Army (IJA), which had already created
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3712-622: The Soviet Far East . They were defeated in the Battle of Khalkhin Gol by a mixed Soviet and Mongolian force led by Georgy Zhukov . This caused the Japanese to abandon attempts to expand to the north , while Soviet aid to China ceased as a result of the Soviet–Japanese Neutrality Pact. In September 1940, Japan decided to invade French Indochina , which was controlled at the time by Vichy France . On 27 September Japan signed
3828-671: The Soviet Union in a Warsaw Pact verses NATO war over Germany and the United Kingdom. The Chiefs of the Air Staff of the day had to fight a constant battle to keep the British aircraft industry alive. In the end only minimal success was achieved, with only a rump aviation industrial base left by the 1970s. The first eight Chiefs of the Air Staff were originally commissioned in the British Army, with four coming from
3944-773: The Thai government signed an armistice and entered an alliance with Japan. Although Japan declared war on the United States and the British Empire , the declaration was not delivered until after Japanese forces had already struck British and American targets. In the early hours of 7 December (Hawaiian time), carrier-based Japanese aircraft launched a surprise, large-scale air strike on the U.S. Pacific Fleet's anchorage at Pearl Harbor in Honolulu, which knocked eight American battleships out of action, destroyed 188 American aircraft, and killed 2,403 Americans. The Japanese believed that
4060-586: The " Three Alls Policy " ("Kill all, Burn all, Loot all") in occupied areas, killing at least 2.7 million civilians. By 1941 the conflict had become a stalemate. Although Japan had occupied much of northern, central, and coastal China, the Nationalist Government had retreated to the interior and set up a provisional capital at Chongqing , while the Chinese communists remained in control of base areas in Shaanxi . Japanese offensive action against
4176-767: The 110 was faster than the Hurricane and almost as fast as the Spitfire, its lack of manoeuvrability and acceleration meant that it was a failure as a long-range escort fighter. On 13 and 15 August, thirteen and thirty aircraft were lost, the equivalent of an entire Gruppe , and the type's worst losses during the campaign. This trend continued with a further eight and fifteen lost on 16 and 17 August. Pacific War Allied occupation of Japan Second Sino-Japanese War Taishō period Shōwa period Asia-Pacific Mediterranean and Middle East Other campaigns Coups The Pacific War , sometimes called
4292-770: The Air Force Board, the Armed Forces Committee, the Chiefs' of Staff Committee and the Senior Appointments Committee. Current responsibilities for CAS include: The post of Chief of the Air Staff (CAS) was established in January 1918, just prior to the official formation of the Royal Air Force (RAF), and its first occupant was Major General Sir Hugh Trenchard . Following Trenchard's resignation in March 1918 after disagreements with
4408-439: The Air Staff (United Kingdom) The Chief of the Air Staff ( CAS ) is the professional head of the Royal Air Force and a member of both the Chiefs of Staff Committee and the Air Force Board . The post was created in 1918 with Major General Sir Hugh Trenchard as the first incumbent. The current and 30th Chief of the Air Staff is Air Chief Marshal Sir Richard Knighton , who succeeded Sir Michael Wigston on 2 June 2023. As
4524-422: The Allied embargo. This was known as the Southern Plan . It was decided—because of the close relationship between the U.K. and the U.S., and the belief that the U.S. would inevitably become involved in the ongoing war in Europe—that Japan would also seize the Philippines, Wake Island and Guam . Japan had initially planned for a limited war, where Japanese forces would seize key objectives and then establish
4640-414: The Allies staging areas from which to mount a counteroffensive. By November 1941 these plans were mostly complete, and were modified only slightly over the next month. Japanese military planners' expectation of success rested on the United Kingdom and the Soviet Union being unable to effectively respond to a Japanese attack because of the threat posed to each by Nazi Germany; in particular, the Soviet Union
4756-417: The Americans, faced with such a sudden and massive blow to their naval power in the Pacific, would agree to a negotiated settlement. However, American losses were less serious than initially thought: the three American aircraft carriers were at sea during the attack, and vital naval infrastructure, Honolulu's submarine base, and signals intelligence units were unscathed. The fact that the bombing happened while
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4872-469: The Battle period he sought neutrality or a peace treaty with Britain. In a secret conference on 23 May 1939, Hitler set out his rather contradictory strategy that an attack on Poland was essential and "will only be successful if the Western Powers keep out of it. If this is impossible, then it will be better to attack in the West and to settle Poland at the same time" with a surprise attack. "If Holland and Belgium are successfully occupied and held, and if France
4988-478: The Bf 109 could outclimb the British fighter. It could also engage in vertical-plane negative- g manoeuvres without the engine cutting out because its DB 601 engine used fuel injection ; this allowed the 109 to dive away from attackers more readily than the carburettor -equipped Merlin. On the other hand, the Bf 109E had a much larger turning circle than its two foes. In general, though, as Alfred Price noted in The Spitfire Story : ... the differences between
5104-503: The Blitz , that lasted from 7 September 1940 to 11 May 1941. German historians do not follow this subdivision and regard the battle as a single campaign lasting from July 1940 to May 1941, including the Blitz. The primary objective of the German forces was to compel Britain to agree to a negotiated peace settlement . In July 1940, the air and sea blockade began, with the Luftwaffe mainly targeting coastal-shipping convoys, as well as ports and shipping centres such as Portsmouth . On 1 August,
5220-406: The British colonies of Malaya , Singapore , and Hong Kong , and invaded Thailand . The Pacific War saw the Allies pitted against Japan, the latter aided by Thailand and to a lesser extent by the Axis powers , Germany and Italy . The Japanese achieved great success in the initial phase of the campaign, but were gradually driven back using an island hopping strategy. The Allies adopted
5336-400: The British public favoured a negotiated peace with an ascendant Germany, Churchill and a majority of his Cabinet refused to consider an armistice. Instead, Churchill used his skilful rhetoric to harden public opinion against capitulation and prepare the British for a long war. The Battle of Britain has the unusual distinction that it gained its name before being fought. The name is derived from
5452-566: The British retreated to Imphal in Manipur, abandoning most of their transportation and equipment. They reached Imphal in May just as the monsoon descended, which halted the operations of both sides in the area. Within China, cooperation between the Chinese Nationalists and the Communists had waned from its zenith at the Battle of Wuhan, and the relationship between the two had soured as both attempted to expand their areas of operation and influence. The Japanese exploited this lack of unity to press their offensive operations in China. Chief of
5568-416: The British trade". Instead of the Wehrmacht attacking the French, the Luftwaffe with naval assistance was to block imports to Britain and attack seaports. "Should the enemy resort to terror measures – for example, to attack our towns in western Germany" they could retaliate by bombing industrial centres and London. Parts of this appeared on 29 November in "Directive No. 9" as future actions once
5684-444: The Channel. In September, RAF Bomber Command night raids disrupted the German preparation of converted barges, and the Luftwaffe's failure to overwhelm the RAF forced Hitler to postpone and eventually cancel Operation Sea Lion. The Luftwaffe proved unable to sustain daylight raids, but their continued night-bombing operations on Britain became known as the Blitz. Germany's failure to destroy Britain's air defences and force it out of
5800-449: The Chinese 38th Division, led by Sun Li-jen . Meanwhile, in the Battle of Yunnan-Burma Road , the Japanese captured Toungoo after hard fighting and sent motorized units to capture Lashio . This cut the Burma Road , which was the western Allies' supply line to Chinese Nationalist troops. Many of Chinese troops were forced either to retreat to India, or withdraw in small parties to Yunnan . Accompanied by large numbers of civilian refugees,
5916-467: The Conduct of the War", dated 31 August 1939, instructed the invasion of Poland on 1 September as planned . Potentially, Luftwaffe "operations against England" were to: dislocate English imports, the armaments industry, and the transport of troops to France. Any favourable opportunity of an effective attack on concentrated units of the English Navy, particularly on battleships or aircraft carriers, will be exploited. The decision regarding attacks on London
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#17327768501156032-429: The Dutch East Indies were, due to their abundant oil reserves, crucially important for further expansion by the Japanese Empire. By 1940 the Japanese also included Indochina, Malaya, and the Philippines within their concept of the Greater East Asia Co-Prosperity Sphere. Japanese troop build-ups in Hainan, Taiwan, and Haiphong were noted in foreign media, Japanese military officers were increasingly and openly talking about
6148-428: The Dutch East Indies would be occupied. The Second Operational Phase called for further expansion into the South Pacific by seizing eastern New Guinea, New Britain, Fiji, Samoa, and strategic points in around Australia. In the Central Pacific, Midway Island was targeted, as were the Aleutian Islands in the North Pacific. Japanese strategists believed that the seizure of these key areas would provide defensive depth and deny
6264-471: The French surrender on 22 June 1940, Hitler mainly focused his energies on the possibility of invading the Soviet Union . He believed that the British, defeated on the continent and without European allies, would quickly come to terms. The Germans were so convinced of an imminent armistice that they began constructing street decorations for the homecoming parades of victorious troops. Although the British Foreign Secretary , Lord Halifax , and certain elements of
6380-500: The IJN and IJA launched simultaneous surprise attacks on the United States and the British Empire on 7 December (8 December in Asia/West Pacific time zones). The locations of this first wave of Japanese attacks included the American territories of Hawaii, the Philippines , Guam , and Wake Island and the British territories of Malaya , Singapore , and Hong Kong . Concurrently, Japanese forces invaded southern and eastern Thailand and were resisted for several hours, before
6496-459: The Japanese puppet states of Manchukuo (consisting of most of Manchuria ), and the collaborationist Wang Jingwei regime (which controlled the coastal regions of China), respectively. Japan conscripted many soldiers from its colonies of Korea and Taiwan . Collaborationist security units were also formed in Hong Kong , Singapore , the Philippines , the Dutch East Indies , British Malaya , British Borneo , former French Indochina (after
6612-563: The Japanese on 15 February 1942. About 130,000 Indian, British, Australian and Dutch personnel became Japanese prisoners of war. Bali and Timor fell in February. The rapid collapse of Allied resistance left the "ABDA area" split in two. Wavell resigned from ABDACOM on 25 February, handing control of the ABDA Area to local commanders and returning to the post of Commander-in-Chief, India . Meanwhile, Japanese aircraft had all but eliminated Allied air power in Southeast Asia and were carrying out air attacks on northern Australia , beginning with
6728-433: The Low Countries in the Battle of France , leaving Britain to face the threat of invasion by sea. The German high command recognised the difficulties of a seaborne attack while the Royal Navy controlled the English Channel and the North Sea . On 16 July, Hitler ordered the preparation of Operation Sea Lion as a potential amphibious and airborne assault on Britain, to follow once the Luftwaffe had air superiority over
6844-401: The Luftwaffe lacked the means to do much damage to Britain's war economy beyond laying naval mines . Joseph Schmid , in charge of Luftwaffe intelligence, presented a report on 22 November 1939, stating that, "Of all Germany's possible enemies, Britain is the most dangerous." This "Proposal for the Conduct of Air Warfare" argued for a counter to the British blockade and said "Key is to paralyse
6960-473: The Luftwaffe was directed to achieve air superiority over the RAF, with the aim of incapacitating RAF Fighter Command ; 12 days later , it shifted the attacks to RAF airfields and infrastructure . As the battle progressed, the Luftwaffe also targeted factories involved in aircraft production and strategic infrastructure. Eventually, it employed terror bombing on areas of political significance and on civilians. The Germans had rapidly overwhelmed France and
7076-660: The Minister in charge of Defence Coordination, Sir Thomas Inskip , sided with Dowding that "The role of our air force is not an early knock-out blow" but rather was "to prevent the Germans from knocking us out" and fighter squadrons were just as necessary as bomber squadrons. The Spanish Civil War (1936–1939) gave the Luftwaffe Condor Legion the opportunity to test air fighting tactics with their new aeroplanes. Wolfram von Richthofen became an exponent of air power providing ground support to other services. The difficulty of accurately hitting targets prompted Ernst Udet to require that all new bombers had to be dive bombers , and led to
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#17327768501157192-402: The OKW reviewed the potential for an air- and seaborne invasion of Britain: the Kriegsmarine was faced with the threat the Royal Navy's larger Home Fleet posed to a crossing of the English Channel , and together with the German Army viewed control of airspace as a necessary precondition. The German navy thought air superiority alone was insufficient; the German naval staff had already produced
7308-410: The RAF progressively adopts responsibility for Air Capability planning and management from MOD Head Office, CAS will be responsible for commissioning RAF equipment, materiel and other support requirements. As a Service Chief of Staff, he has the right of direct access to the Secretary of State and the Prime Minister. CAS chairs the Air Force Board Standing Committee, and is a member of the Defence Council,
7424-421: The Rotol (constant speed propeller) equipped Hurricane Mk I, depending on altitude. The speed and climb disparity with the original non-Rotol Hurricane was even greater. By mid-1940, all RAF Spitfire and Hurricane fighter squadrons converted to 100 octane aviation fuel, which allowed their Merlin engines to generate significantly more power and an approximately 30 mph increase in speed at low altitudes through
7540-472: The Soviet Union. Erhard Milch organised rapid expansion, and following the 1933 Nazi seizure of power , his subordinate Robert Knauss formulated a deterrence theory incorporating Douhet's ideas and Tirpitz's "risk theory" . This proposed a fleet of heavy bombers to deter a preventive attack by France and Poland before Germany could fully rearm. A 1933–34 war game indicated a need for fighters and anti-aircraft protection as well as bombers. On 1 March 1935,
7656-462: The Spitfire and the Me 109 in performance and handling were only marginal, and in a combat they were almost always surmounted by tactical considerations of which side had seen the other first, which had the advantage of sun, altitude, numbers, pilot ability, tactical situation, tactical co-ordination, amount of fuel remaining, etc. The Bf 109E was also used as a Jabo ( jagdbomber , fighter-bomber ) – the E-4/B and E-7 models could carry
7772-422: The US was not officially at war caused a wave of outrage across the country. Japan's fallback strategy, relying on a war of attrition against the United States, was beyond the Imperial Japanese Navy's capabilities. Opposition to war in the United States vanished after the attack. On 8 December, the United Kingdom, the United States, Canada, and the Netherlands declared war on Japan, followed by Australia
7888-503: The Western powers through armed forces of the Greater East Asia Co-Prosperity Sphere . Japanese officials integrated what they called the Japan–China Incident ( 日支事変 , Nisshi Jihen ) into the Greater East Asia War. During the Occupation of Japan (1945–52), these terms were prohibited in official documents (although their informal usage continued). The war became officially known as the Pacific War ( 太平洋戦争 , Taiheiyō Sensō ) . The Fifteen Years' War ( 十五年戦争 , Jūgonen Sensō )
8004-414: The abyss of a new Dark Age made more sinister, and perhaps more protracted, by the lights of a perverted science. Let us therefore brace ourselves to our duties, and so bear ourselves that, if the British Empire and its Commonwealth last for a thousand years, men will still say, "This was their finest hour". From the outset of his rise to power, Adolf Hitler expressed admiration for Britain, and throughout
8120-403: The aircraft carrier HMS Hermes was sunk, along with other Allied ships. The attack forced the Royal Navy to withdraw to the western part of the Indian Ocean, paving the way for a Japanese assault on Burma and India. In Burma, the Japanese captured Moulmein on 31 January 1942, and then drove outnumbered British and Indian troops towards the Sittang River . On 23 February, a bridge over
8236-431: The army and navy. It could be used to overcome a stalemate, or used when only destruction of the enemy's economy would be conclusive. The list excluded bombing civilians to destroy homes or undermine morale, as that was considered a waste of strategic effort, but the doctrine allowed revenge attacks if German civilians were bombed. A revised edition was issued in 1940, and the continuing central principle of Luftwaffe doctrine
8352-666: The city, which fell to Japan after three months of fighting. The Japanese continued to push deeper into China, capturing the capital Nanjing in mid-December 1937 and committing atrocities in the Nanjing Massacre , including rape, murder and torture. In March 1938, Nationalist forces won their first victory at Taierzhuang , but the city of Xuzhou was taken by the Japanese in May. In June 1938, Japan deployed about 350,000 troops to invade Wuhan and captured it in October after
8468-507: The coast had been conquered. On 24 May 1940 "Directive No. 13" authorised attacks on the blockade targets, as well as retaliation for RAF bombing of industrial targets in the Ruhr. After the defeat of France, the OKW felt they had won the war, and some more pressure would persuade Britain to give in. On 30 June, the OKW Chief of Staff Alfred Jodl issued his paper setting out options: the first
8584-599: The command of the Imperial Japanese Navy. Historically, the IJA consumed the majority of the state's military budget (with a 73% - 27% split in 1940), but from 1942 to 1945 the IJA would account for 60% of Japan's military spending, while the IJN would account for 40%. Japan's key initial objective was to seize economic resources in the Dutch East Indies and Malaya, in order to alleviate the effects of
8700-402: The conduct of air and sea warfare against England" issued on 1 August attempted to keep all the options open. The Luftwaffe's Adlertag campaign was to start around 5 August, subject to weather, with the aim of gaining air superiority over southern England as a necessary precondition of invasion, to give credibility to the threat and give Hitler the option of ordering the invasion. The intention
8816-439: The continent, and on 30 June the OKW Chief of Staff, Alfred Jodl , issued his review of options to increase pressure on Britain to agree to a negotiated peace. The first priority was to eliminate the RAF and gain air supremacy. Intensified air attacks against shipping and the economy could affect food supplies and civilian morale in the long term. Reprisal attacks of terror bombing had the potential to cause quicker capitulation, but
8932-536: The continuing influence of the 1935 "Conduct of the Air War" doctrine, the main focus of the Luftwaffe command (including Göring) was in concentrating attacks to destroy enemy armed forces on the battlefield, and "blitzkrieg" close air support of the army succeeded brilliantly. They reserved strategic bombing for a stalemate situation or revenge attacks, but doubted if this could be decisive on its own and regarded bombing civilians to destroy homes or undermine morale as
9048-737: The defending armies in Norway in early 1940 created a significant political crisis in Britain. In early May 1940, the Norway Debate questioned the fitness for office of the British Prime Minister Neville Chamberlain . On 10 May, the same day Winston Churchill became British Prime Minister, the Germans initiated the Battle of France with an aggressive invasion of French territory. RAF Fighter Command
9164-616: The development of the Knickebein system for night time navigation. Priority was given to producing large numbers of smaller aeroplanes, and plans for a long-range, four-engined strategic bomber were cancelled. The early stages of the Second World War saw successful German invasions on the continent, aided decisively by the air power of the Luftwaffe, which was able to establish tactical air superiority with great effectiveness. The speed with which German forces defeated most of
9280-470: The early 1920s, Trenchard had to fight to keep the RAF from being divided and absorbed back into the Royal Navy and the British Army . After Lord Trenchard retired in 1930 there were still suggestions that the RAF should be broken up, but Trenchard's foundations proved solid. By the time the Second World War broke out in 1939, the then occupant of the post, Air Chief Marshal Sir Cyril Newall , had
9396-533: The effect on morale was uncertain. On the same day, the Luftwaffe Commander-in-Chief, Hermann Göring issued his operational directive: to destroy the RAF, thus protecting German industry, and also to block overseas supplies to Britain. The German Supreme Command argued over the practicality of these options. In "Directive No. 16 – On preparations for a landing operation against England" on 16 July, Hitler required readiness by mid-August for
9512-438: The first air minister, Lord Rothermere , his rival Major General Sir Frederick Sykes was appointed. For political reasons Trenchard's resignation did not take effect until late April in order that he would be CAS when the RAF was formed. With Winston Churchill 's post-war appointment as Secretary of State for War and Air , Sykes was moved sideways to head up the nascent Civil Aviation ministry and Trenchard returned as CAS. In
9628-620: The first independent strategic bombing campaign. Hitler's 1925 book Mein Kampf mostly set out his hatreds: he only admired ordinary German World War I soldiers and Britain, which he saw as an ally against communism. In 1935 Hermann Göring welcomed news that Britain, as a potential ally, was rearming. In 1936 he promised assistance to defend the British Empire, asking only a free hand in Eastern Europe, and repeated this to Lord Halifax in 1937. That year, von Ribbentrop met Churchill with
9744-472: The first phase of the Battle of Britain. It was reinforced on 24 May during the Battle of France by "Directive No. 13", which authorised the Luftwaffe "to attack the English homeland in the fullest manner, as soon as sufficient forces are available. This attack will be opened by an annihilating reprisal for English attacks on the Ruhr Basin." By the end of June 1940, Germany had defeated Britain's allies on
9860-628: The form of the 201st Fighter Squadron and Free France sent naval support in the form of Le Triomphant and later the Richelieu . The Axis -aligned states which assisted Japan included the authoritarian government of Thailand . Also involved were members of the Greater East Asia Co-Prosperity Sphere, which included the Manchukuo Imperial Army and Collaborationist Chinese Army of
9976-485: The infantry, two from the artillery and one each from the cavalry and the engineers. Of these both Lord Trenchard and Sir John Salmond each held the post over two separate periods. By the early mid-1950s sufficient time had elapsed for officers originally commissioned in the British air services of the First World War to have risen through the ranks to RAF's senior post; Sir John Slessor had originally served in
10092-471: The invasion plans, unlike his usual attitude toward military operations, but on 16 July he issued Directive No. 16, ordering preparations for Operation Sea Lion. The navy insisted on a narrow beachhead and an extended period for landing troops; the army rejected these plans: the Luftwaffe could begin an air attack in August. Hitler held a meeting of his army and navy chiefs on 31 July. The navy said 22 September
10208-453: The long continuity of our institutions and our Empire . The whole fury and might of the enemy must very soon be turned on us. Hitler knows that he will have to break us in this island or lose the war. If we can stand up to him, all Europe may be free and the life of the world may move forward into broad, sunlit uplands. But if we fail, then the whole world, including the United States, including all that we have known and cared for, will sink into
10324-406: The merger of the British army and navy air services into the Royal Air Force (RAF). Its first Chief of the Air Staff , Hugh Trenchard , was among the military strategists in the 1920s, like Giulio Douhet , who saw air warfare as a new way to overcome the bloody stalemate of trench warfare . Interception was expected to be nearly impossible, with fighter planes no faster than bombers. Their slogan
10440-499: The next day. Thailand, with its territory already serving as a springboard for Japan's Malayan Campaign , surrendered within hours of the Japanese invasion. The government of Thailand formally allied with Japan on 21 December. To the south, the IJA seized the British colony of Penang on 19 December, encountering little resistance. Hong Kong was attacked on 8 December and fell to Japanese forces on 25 December 1941. American bases on Guam and Wake Island were seized by Japan at around
10556-518: The other services", according to an April 1944 German account of their military mission. Göring was convinced that strategic bombing could win objectives that were beyond the army and navy, and gain political advantages in the Third Reich for the Luftwaffe and himself. He expected air warfare to decisively force Britain to negotiate, as all in the OKW hoped, and the Luftwaffe took little interest in planning to support an invasion. The Luftwaffe faced
10672-785: The overthrow of the French regime in 1945 ), as well as Timorese militia . Germany and Italy both had limited involvement in the Pacific War. The German and the Italian navies operated submarines and raiding ships in the Indian and Pacific Oceans, notably the Monsun Gruppe . Between 1942 and 1945, there were four main areas of conflict in the Pacific War: China, the Central Pacific , South-East Asia and
10788-905: The possessor of the Dutch East Indies ) was also involved. All of these were members of the Pacific War Council . From 1944 the French commando group Corps Léger d'Intervention also took part in resistance operations in Indochina. Some active pro-allied guerrillas in Asia included the Malayan Peoples' Anti-Japanese Army , the Korean Liberation Army , the Free Thai Movement , the Việt Minh ,
10904-412: The possibility of an invasion he called Operation Sea Lion , unless the British agreed to negotiations. The Luftwaffe reported that it would be ready to launch its major attack early in August. The Kriegsmarine Commander-in-Chief, Grand Admiral Erich Raeder , continued to highlight the impracticality of these plans and said sea invasion could not take place before early 1941. Hitler now argued that Britain
11020-653: The prospect of war, and Admiral Sankichi Takahashi was reported as stating that a showdown with the US was necessary. In an effort to discourage Japanese militarism, Western powers including Australia, the US, Britain, and the Dutch government in exile , which controlled the Dutch East Indies, stopped selling oil , iron ore, and steel to Japan. In Japan, the government and Japanese nationalists viewed these embargoes as acts of aggression; imported oil made up about 80% of domestic consumption, without which Japan's economy would grind to
11136-615: The rest of Australia, remained under local commands. On 15 January, Wavell moved to Bandung in Java to assume control of ABDACOM. In January, Japan invaded British Burma, the Dutch East Indies, New Guinea, and the Solomon Islands, and captured Manila, Kuala Lumpur and Rabaul . After being driven out of Malaya, Allied forces in Singapore attempted to resist the Japanese during the Battle of Singapore, but were forced to surrender to
11252-470: The retreating and regrouping Chinese forces was largely stalled by the mountainous terrain in southwestern China, while the Communists organized widespread guerrilla and saboteur activities in northern and eastern China behind the Japanese front line. Japan sponsored several puppet governments , one of which was headed by Wang Jingwei . Conflicts between Chinese Communist and Nationalist forces vying for territorial control behind enemy lines culminated in
11368-646: The river was demolished prematurely, stranding most of an Indian division. On 8 March, the Japanese occupied Rangoon . The Allies attempted to defend Central Burma, with Indian and Burmese divisions holding the Irrawaddy River valley and the Chinese Expeditionary Force in Burma defending Toungoo . On 16 April, 7,000 British soldiers were encircled by the Japanese 33rd Division during the Battle of Yenangyaung , but subsequently rescued by
11484-515: The same time. British, Australian, and Dutch forces, already drained of personnel and matériel by two years of war with Germany, and heavily committed in the Middle East, North Africa, and elsewhere, were unable to provide more than token resistance. Two major British warships, the battlecruiser HMS Repulse and the battleship HMS Prince of Wales , were sunk by a Japanese air attack off Malaya on 10 December 1941. Following
11600-579: The tradition of British diplomacy, to secure British independence without war. On 20 May, Halifax secretly requested a Swedish businessman to make contact with Göring to open negotiations. Shortly afterwards, in the May 1940 War Cabinet Crisis , Halifax argued for negotiations involving the Italians, but this was rejected by Churchill with majority support. An approach made through the Swedish ambassador on 22 June
11716-422: The use of an Emergency Boost Override . In September 1940, the more powerful Mk IIa series 1 Hurricanes started entering service in small numbers. This version was capable of a maximum speed of 342 mph (550 km/h), some 20 mph more than the original (non-Rotol) Mk I, though it was still 15 to 20 mph slower than a Bf 109 (depending on altitude). The performance of the Spitfire over Dunkirk came as
11832-440: The war was the first major German defeat in the Second World War. The Battle of Britain takes its name from the speech given by Prime Minister Winston Churchill to the House of Commons on 18 June: "What General Weygand called the 'Battle of France' is over. I expect that the Battle of Britain is about to begin." Strategic bombing during World War I introduced air attacks intended to panic civilian targets and led in 1918 to
11948-459: Was occupied by the Allies. Japan lost its former possessions in Asia and the Pacific and had its sovereignty limited to the four main home islands and other minor islands as determined by the Allies. In Allied countries during the war, the "Pacific War" was not usually distinguished from World War II , or was known simply as the War against Japan . In the United States, the term Pacific theater
12064-620: Was desperately short of trained pilots and aircraft. Churchill sent fighter squadrons, the Air Component of the British Expeditionary Force , to support operations in France, where the RAF suffered heavy losses. This was despite the objections of its commander Hugh Dowding that the diversion of his forces would leave home defences under-strength. After the evacuation of British and French soldiers from Dunkirk and
12180-560: Was forbidden a military air force by the 1919 Treaty of Versailles , and therefore air crew were trained by means of civilian and sport flying . Following a 1923 memorandum, the Deutsche Luft Hansa airline developed designs for aircraft such as the Junkers Ju 52 , which could carry passengers and freight, but also be readily adapted into a bomber. In 1926, the secret Lipetsk fighter-pilot school began training Germans in
12296-464: Was holding out in hope of assistance from Russia, and the Soviet Union was to be invaded by mid 1941. Göring met his air fleet commanders, and on 24 July issued "Tasks and Goals" of firstly gaining air supremacy, secondly protecting invasion forces and attacking the Royal Navy's ships. Thirdly, they were to blockade imports, bombing harbours and stores of supplies. Hitler's "Directive No. 17 – For
12412-656: Was prepared to move deeper into China. The Marco Polo Bridge Incident on 7 July 1937 provoked full-scale war between China and Japan. The Nationalist Party and the Chinese Communists suspended their civil war in order to form a nominal alliance against Japan, and the Soviet Union quickly lent support by providing large amounts of materiel to Chinese troops. In August 1937, Generalissimo Chiang Kai-shek deployed some of his best troops to defend Shanghai against some 300,000 Japanese troops attempting to seize
12528-473: Was received in silence, but he did not suggest negotiations and this was perceived as being effectively an ultimatum by the British government, which rejected the offer. Halifax kept trying to arrange peace until he was sent to Washington in December as ambassador, and in January 1941 Hitler expressed continued interest in negotiating peace with Britain. A May 1939 planning exercise by Luftflotte 3 found that
12644-649: Was reported to Hitler, making peace negotiations seem feasible. Throughout July, as the battle started, the Germans made wider attempts to find a diplomatic solution. On 2 July, the day the armed forces were asked to start preliminary planning for an invasion, Hitler got von Ribbentrop to draft a speech offering peace negotiations. On 19 July Hitler made this speech to the German Parliament in Berlin, appealing "to reason and common sense", and said he could "see no reason why this war should go on". His sombre conclusion
12760-481: Was seen as unlikely to commence hostilities. The Japanese leadership was aware that a total military victory in the traditional sense against the United States was impossible, and instead envisaged that rapid, aggressive and expansive conquest would force the U.S. to agree to a negotiated peace that would recognize Japanese hegemony in Asia. Following prolonged tensions between Japan and the Western powers , units of
12876-401: Was that the bomber will always get through , and that the only defence was a deterrent bomber force capable of matching retaliation. Predictions were made that a bomber offensive would quickly cause thousands of deaths and civilian hysteria leading to capitulation. However, widespread pacifism following the horrors of the First World War contributed to a reluctance to provide resources. Germany
12992-545: Was that destruction of enemy armed forces was of primary importance. The RAF responded to Luftwaffe developments with its 1934 Expansion Plan A rearmament scheme, and in 1936 it was restructured into Bomber Command , Coastal Command , Training Command and Fighter Command . The last was under Hugh Dowding , who opposed the doctrine that bombers were unstoppable: the invention of radar at that time could allow early detection, and prototype monoplane fighters were significantly faster. Priorities were disputed, but in December 1937,
13108-466: Was the earliest possible date and proposed postponement until the following year, but Hitler preferred September. He then told von Brauchitsch and Halder that he would decide on the landing operation eight to fourteen days after the air attack began. On 1 August, he issued Directive No. 17 for intensified air and sea warfare, to begin with Adlertag on or after 5 August, subject to weather, keeping options open for negotiated peace or blockade and siege. Under
13224-426: Was to incapacitate the RAF so much that the UK would feel open to air attack, and would begin peace negotiations. It was also to isolate the UK and damage war production, beginning an effective blockade. Following severe Luftwaffe losses, Hitler agreed at a 14 September OKW conference that the air campaign was to intensify regardless of invasion plans. On 16 September, Göring gave the order for this change in strategy, to
13340-495: Was to increase attacks on shipping, economic targets and the RAF: air attacks and food shortages were expected to break morale and lead to capitulation. Destruction of the RAF was the first priority, and invasion would be a last resort. Göring's operational directive issued the same day ordered the destruction of the RAF to clear the way for attacks cutting off seaborne supplies to Britain. It made no mention of invasion. In November 1939,
13456-684: Was widely used. The US Armed Forces considered the China Burma India theater to be distinct from the Asiatic-Pacific theater during the conflict. Japan used the name Greater East Asia War ( 大東亜戦争 , Dai Tō-A Sensō ) , as chosen by a cabinet decision on 10 December 1941, to refer to both the war with the Western Allies and the ongoing war in China. This name was released to the public on 12 December, with an explanation that it involved Asian nations achieving their independence from
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