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87-589: The II Corps was a corps -sized formation of the United States Army that was active in both World War I and World War II . It was originally formed and fought on the Western Front during World War I and was also the first American formation of any size to see combat in North Africa or Europe during World War II. II Corps was organized on 24 February 1918. Initially it consisted of

174-582: A corps d'armée in 1815 for commanding his mixed allied force of four divisions against Napoleon I. When the British Army was expanded from an expeditionary force in the First World War, corps were created to manage the large numbers of divisions. The British corps in World War I included 23 infantry corps and a few mounted corps. The word was adopted for other special formations such as

261-569: A Canadian corps headquarters. This corps was renamed I Canadian Corps as a second corps headquarters was established in the UK, with the eventual formation of five Canadian divisions in England. I Canadian Corps eventually fought in Italy, II Canadian Corps in northwest Europe, and the two were reunited in early 1945. After the formations were disbanded after VE Day, Canada has never subsequently organized

348-457: A Deferred National Guard unit. The headquarters was initiated in late 1923 with Reserve personnel at 39 Whitehall Street, New York City, New York. HHC, II Corps was withdrawn on 15 August 1927 from the N.G. and demobilized. Concurrently, O.R. personnel were relieved from assignment. As part of an Army reorganization beginning in August 1927 that grouped the new XX, XXI, and XXII Corps, organized in

435-457: A MEF headquarters group, a Marine division, a Marine aircraft wing, and a force service support group (re-designated as Marine logistics group in 2005). The pre– World War II Red Army of the former USSR had rifle corps much like in the Western sense with approximately three divisions to a corps. However, after the war started, the recently purged Soviet senior command ( Stavka ) structure

522-518: A communications regiment (or a separate battalion). In 1945, air defence corps could include 1 anti-aircraft artillery brigade or division. Air defence fighters operating within the limits of responsibility of the KPVO was transferred to the corps. By the end of the war, there were 14 KPVO in the Active Army, of which 5 corps continued to carry out the tasks assigned to them even after the war, and

609-477: A corps headquarters. Royal Canadian Army Cadets : A corps size in the RCAC is different everywhere, depending on the size. The commanding officer can be a captain (Previously, Commanding Officers of a large corps could have been a Major, but that capability has been removed with the creation of CJCR Group Order 5511-1) The National Revolutionary Army (NRA) corps ( 軍團 ) was a type of military organization used by

696-484: A corps is a battlefield formation composed of two or more divisions , and typically commanded by a lieutenant general . During World War I and World War II , due to the large scale of combat, multiple corps were combined into armies which then formed into army groups . In Western armies with numbered corps, the number is often indicated in Roman numerals (e.g., VII Corps ). The Australian and New Zealand Army Corps

783-407: A corps is also a grouping of personnel by common function, also known as an arm , service , mustering or branch . In the British Army, an administrative corps performs much the same role – for personnel that otherwise lack them – as a ceremonial regiment . An administrative corps therefore has its own cap badge , stable belt , and other insignia and traditions. In some cases, the term corps

870-500: A dedicated Cavalry Corps of three divisions and horse artillery assigned to the corps headquarters. In the early years of the war, field artillery was either part of an artillery reserve under direct army control or assigned to individual divisions. However, after the Battle of Chancellorsville the divisional artillery was placed under corps control, with each corps assigned a brigade of between four and six batteries commanded by

957-547: A number of aides-de-camp and a general staff of other officers. This staff consisted of a chief of cavalry, a chief of artillery, and representatives of the War Department 's various bureaus: an assistant adjutant general , a quartermaster , an assistant inspector general , a commissary of subsistence, an ordnance officer (all with the rank of lieutenant colonel ), and a medical director. However, there were no dedicated combat service support formations as part of

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1044-413: A numerically superior foe. This allowed Napoleon I to mass the bulk of his forces to effect a penetration into a weak section of enemy lines without risking his own communications or flank. This innovation stimulated other European powers to adopt similar military structures. The corps has remained an echelon of French Army organization to the modern day. As fixed military formation already in peace-time it

1131-399: A soldier as part of a specific corps (or sometimes individual battalion). This lanyard is a woven piece of cord which is worn on ceremonial uniforms and dates back to the issue of clasp knives in the early 20th century which were secured to the uniform by a length of cord. If a soldier is posted to a unit outside of their parent corps, except in some circumstances the soldier continues to wear

1218-505: Is also used informally, for looser groupings of independent regiments and other units – and without many or any unifying regalia , military traditions or other accoutrements – such as the Royal Armoured Corps or the "Corps of Infantry". In Australia, soldiers belong foremost to a corps which defines a common function or employment across the army. The Australian Army has a system of coloured lanyards, which each identify

1305-480: Is an operational-tactical formation (in the past - the highest tactical formation) of the former Soviet Air Defence Forces and now Russian Air Defence Forces /Aerospace Forces. The purpose of the such a corps is to protect important administrative, industrial and economic centers and regions of the country, groupings of troops (forces) and military facilities within the established limits of responsibility against air strikes. In organizational terms, an air defence corps

1392-500: Is composed of three or four divisions. There are three types of corps in the Indian Army: strike, holding and mixed. The corps HQ is the highest field formation in the army. The Pakistan Army has nine manoeuvre corps, each commanded by a lieutenant general . Each corps is composed of at least two divisions. The corps HQ is the highest field formation in the army. The Polish Armed Forces used independent operational groups in

1479-571: Is part of the district (or a separate army) of the Air Defence Forces. Also some air defence corps were separate. On the basis of individual corps, air defence zones or air defence corps areas could be created. The first KPVO were created in February 1938 for the air defence of Moscow , Leningrad and Baku (respectively 1st, 2nd and 3rd) based on anti-aircraft artillery divisions and air defence brigade ( 3rd KPVO ). The staff of

1566-489: Is the highest level of the forces that is concerned with actual combat and operational deployment. Higher levels of command are concerned with administration rather than operations, at least under current doctrine. The corps provides operational direction for the forces under its command. As of 2014, the active field corps in the US Army are I Corps , III Corps , and XVIII Airborne Corps ; their lineages derive from three of

1653-702: The ARVN corps areas. As of July 2016, the Army deactivated all corps headquarters save three CONUS based corps ( I Corps - Washington, III Corps - Texas, and XVIII Airborne Corps - North Carolina). In the 1960s, the Marine Corps activated the I Marine Expeditionary Force (I MEF) on Okinawa (based in California since 1971) and II Marine Expeditionary Force (II MEF) in North Carolina, and re-activated

1740-673: The Allied Rapid Reaction Corps in 1994. It is no longer a purely British formation, although the UK is the "framework nation" and provides most of the staff for the headquarters. A purely national Corps headquarters could be quickly reconstituted if necessary. It took command of the International Security Assistance Force in Afghanistan on 4 May 2006. Previously, it was deployed as the headquarters commanding land forces during

1827-665: The Australian Corps , on the Western Front , under Lieutenant General Sir John Monash . During World War II, the Australian I Corps was formed to co-ordinate three Second Australian Imperial Force (2nd AIF) units: the 6th , 7th and 9th Divisions , as well as other Allied units on some occasions, in the North African campaign and Greek campaign . Following the commencement of the Pacific War , there

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1914-555: The Chinese Republic , and usually exercised command over two to three NRA divisions and often a number of independent brigades or regiments and supporting units. The Chinese Republic had 133 corps during the Second Sino-Japanese War . After losses in the early part of the war, under the 1938 reforms, the remaining scarce artillery and the other support formations were withdrawn from the division and

2001-934: The Dental Branch (Canadian Forces) and the Canadian Forces Medical Service of the Canadian Forces Health Services Group (CF H Svcs Gp). The Royal Canadian Army Service Corps transport and supply elements were combined with the Royal Canadian Ordnance Corps to form the Logistics Branch The Royal Canadian Army Service Corps clerical trades were merged with the Royal Canadian Army Pay Corps and

2088-908: The Fifth Army during the German offensive known as Operation Michael . The Fourth Army spearheaded the British Hundred Days offensive that began with the Battle of Amiens and ended with the Armistice in November, 1918. On the first day of the Somme the Fourth Army comprised: When reformed for the Battle of Amiens: In September 1918 the Army was the only British force reinforced with substantial American (AEF) forces: In

2175-872: The Hundred Days Offensive , as part of the British Third Army . The 33rd Division was in reserve behind the British 4th Army at the opening of the August offensive. With the British III Corps attack stalling on the Chipilly Spur feature the 131st Regiment of the 33rd Division was sent to assist on 9 August, which it did with distinction. The following day the Regiment was attached to the 4th Australian Division and remained there until 12 August. From 12 August until 20 August it

2262-438: The KPVO included: 4-6 anti-aircraft artillery regiments, 1 anti-aircraft machine-gun regiment, 1 searchlight regiment (or battalion), 1-2 regiments (or divisions) barrage balloons , 1- 2 regiments (or battalions) of visual observation, warning and communications ( VNOS ), and a separate communications battalion. From September 1938 to November 1940, the KPVO also included 1-2 regiments (battalions) of local air defence. During

2349-618: The Kosovo War in 1999 and also saw service in Bosnia and Herzegovina , commanding the initial stages of the IFOR deployment prior to that in 1996. Otherwise, the only time a British corps headquarters has been operationally deployed since 1945 was II Corps during the Suez Crisis . The structure of a field corps in the United States Army is not permanent. On the battlefield, the corps

2436-707: The Officers Training Corps . Military training of teenage boys is undertaken at secondary schools through the Combined Cadet Force , in which participation was compulsory at some schools in the 1950s. Schoolboy jargon called the CCF simply "Corps". The British Army still has a corps headquarters for operational control of forces. I Corps of the British Army of the Rhine was redesignated

2523-630: The Royal Canadian Postal Corps to form the Administration Branch (later merged with the Logistics Branch ) Other "corps", included: Canadian Engineer Corps , Signalling Corps , Corps of Guides , Canadian Women's Army Corps , Royal Canadian Army Veterinary Corps , Canadian Forestry Corps , Canadian Provost Corps and Canadian Intelligence Corps . British Fourth Army The Fourth Army

2610-608: The Second World War , no Fourth Army took the field but as part of the deception plans Operation Cockade and the later Operation Fortitude North, the Germans were encouraged to believe that a Fourth Army had been established with its headquarters in Edinburgh Castle and was preparing to invade Norway . The selection of the inactive Fourth Army was likely very deliberate because of its combat history during

2697-521: The Tunisia Campaign , II Corps was defeated by German troops under Hans-Jürgen von Arnim at the Battle of Sidi Bou Zid . II Corps was again decisively defeated in February 1943 during the Battle of Kasserine Pass by veteran troops under Generalfeldmarschall Erwin Rommel . The defeats were compounded by American inexperience, poor senior leadership, and lack of armor comparable to that in

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2784-404: The U.S. Fifth Army , where it was to serve for the rest of the conflict, participating in grueling mountain warfare and often experienced fighting in terrible weather conditions. Soon after arrival, II Corps took the 3rd and 36th Infantry Divisions under command. In late January 1944 II Corps, now with the 1st Armored Division under command, took part in the Battle of Rapido River , part of

2871-438: The 27th, 30th, 33rd, 78th and 80th Divisions. In June 1918, the individual divisions of II Corps, which was commanded by Major General George W. Read , were assigned to British and Australian corps for familiarization training. On 4 July, elements of the 33rd Division (Major General George Bell Jr. ) took part in the Battle of Hamel , while attached to the Australian Corps . (The Australian commander, General Sir John Monash ,

2958-984: The Allies in the Second Battle of the Somme . This pushed the German 2nd Army back along a 50-mile (80 km) front line . British and US units advanced on Arras . On 29 August, Bapaume fell to the New Zealand Division and other elements of the British IV Corps . This allowed the Australian Corps to cross the Somme River on 31 August and break the German lines in the Battle of Mont St. Quentin . During late September 1918, with two Army National Guard Divisions ( 27th and 30th , less their artillery) under command, II Corps

3045-710: The Armistice, the peacetime Canadian militia was nominally organized into corps and divisions but no full-time formations larger than a battalion were ever trained or exercised. Early in the Second World War, Canada's contribution to the British-French forces fighting the Germans was limited to a single division. After the fall of France in June 1940, a second division moved to England, coming under command of

3132-939: The Armour Branch continued to use the title Royal Canadian Armoured Corps , the Infantry Branch continued to use the Royal Canadian Infantry Corps designation, and the Artillery Branch uses the term Royal Regiment of Canadian Artillery . When the Army, Royal Canadian Navy , and Royal Canadian Air Force were merged in 1968 to form the Canadian Forces, the Royal Canadian Dental Corps and Royal Canadian Army Medical Corps were deactivated and merged with their Naval and Air Force counterparts to form

3219-648: The Army and Marines diverged in their approach to the concept of the field corps. The Army continued to group its divisions into traditional corps organizations in the Continental United States (CONUS), West Germany ( V Corps and VII Corps ), and South Korea (I Corps). However, during the Vietnam War , the Army designated its corps-level headquarters in South Vietnam as I Field Force and II Field Force to avoid confusion with

3306-726: The British 1st and 6th Divisions until 25 October. II Corps was demobilized 1 February 1919. As part of the National Defense Act of 1920 , II Corps was constituted in the National on 29 July 1921, allotted to the state of New York, and assigned to the First Army. The headquarters and headquarters company (HHC) were placed on the Deferred List on 2 July 1923 and transferred to the Organized Reserve as

3393-690: The Civil War lacked standing organization at the corps and division levels, it moved swiftly to adopt these during the mobilization for the Spanish–American War in the spring of 1898. On 7 May, General Order 36 called for the establishment of seven "army corps" (repeating the nomenclature of the Civil War); an eighth was authorized later that month. Two of these saw action as a unit: the Fifth in Cuba and

3480-399: The Confederate corps at the Battle of Gettysburg , for instance, exceeded 20,000 men. However, for both armies, unit sizes varied dramatically with attrition throughout the war. In Civil War usages, by both sides, it was common to write out the number, thus "Twenty-first Army Corps", a practice that is usually ignored in modern histories of the war. Although the US Army in the years following

3567-433: The Eighth in the Philippines; elements of the First , Fourth , and Seventh made up the invasion force for Puerto Rico (the Second, Third , and Seventh provided replacements and occupation troops in Cuba, while the Sixth was never organized). The corps headquarters were disbanded during the months following the signing of the peace treaty (with the exception of the Eighth Army Corps, which remained active until 1900 due to

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3654-442: The First Army Maneuvers in 1935, 1939, and 1940. The II Corps headquarters was fully activated on 1 August 1940, less Reserve personnel, at Fort Jay, and assumed command and control of the 1st, 27th, and 44th Divisions for participation in the 1940 First Army maneuvers. After the maneuver, the 1st Division was transferred to the VI Corps, the 27th Division was transferred to the VII Corps, and the 28th and 29th Divisions were assigned to

3741-445: The First World War. That diverted and kept German units away from the real invasion zone in Normandy . In the subsequent Operation Fortitude South , the Fourth Army, with different units, was presented as part of the fictitious First United States Army Group (FUSAG) in its threat to the Pas-de-Calais . After Operation Market Garden , the Fourth Army was notionally intended to conduct Operation Trolleybar , an amphibious assault upon

3828-436: The German panzer forces , as well as the highly effective German high-velocity 88 mm anti-tank guns, which were used in screening tactics to destroy American tanks lured into pursuit of German armored forces. In March 1943, after a change of command to Major General George Patton , II Corps recovered its cohesion and fought for the rest of the Tunisia Campaign, with a stalemate at the Battle of El Guettar . II Corps held

3915-452: The Great Patriotic War from November 1941 to April 1944 the air defence corps were renamed into air defence corps areas (such as the Stalingrad Corps Region ). The corps districts included up to 9 anti-aircraft artillery regiments and 14 separate anti-aircraft artillery battalions, up to 3 anti-aircraft machine-gun regiments, 1 searchlight regiment, 1 regiment (or division) of barrage balloons, up to 4 regiments (or separate battalions) VNOS, and

4002-431: The II Corps. The corps HHC were transferred temporarily to Fort George G. Meade, Maryland, from 10 to 26 December 1940, after which they were transferred to the Pennsylvania Railroad Building, Wilmington, Delaware, arriving there on 26 December 1940. The corps participated in the Carolina Maneuvers in September–November 1941 as part of the First Army. After the maneuver, the corps headquarters began to return to Wilmington and

4089-481: The III Amphibious Corps (which had been deactivated in 1946) as III Marine Expeditionary Force (III MEF) in South Vietnam (re-deployed to Okinawa in 1971). In 1965, all three MEFs were subsequently re-designated as Marine amphibious forces or MAFs, and in 1988 all three Marine Corps corps-level commands were again re-designated as Marine expeditionary forces (MEF). The MEF had evolved into a self-contained, corps-level, Marine air-ground task force (MAGTF) consisting of

4176-416: The Passchendaele–Westroosebeke ridge and an advance begun on Roeselare and Torhout , the XV Corps would mount the coastal operation. As the Ypres fighting became bogged down, the Fourth Army divisions were drawn off as reinforcements until the army was effectively disbanded. The Fourth Army was reformed in early 1918—once again under Rawlinson—following the virtual destruction and subsequent disbanding of

4263-464: The Regular Army, under the new Seventh Army, also a Regular formation and the successor of the old First Army, as a contingency force staffed by professional soldiers rather than reservists that could immediately take control of forces and respond to any emergency, the II Corps HHC were withdrawn from the Organized Reserve and demobilized on 15 August 1927. Concurrently, all Reserve personnel were relieved from assignment. Less than two months later, however,

4350-477: The Seventh Army was redesignated the new First Army, and the XX, XXI, and XXII Corps as the new I, II, and III Corps, respectively. The second iteration of the II Corps was constituted in the Regular Army as HHC, XXI Corps on 15 August 1927, allotted to the Second Corps Area, and assigned to the Seventh Army. Redesignated HHC, II Corps on 13 October 1927 and concurrently assigned to the First Army. The designated headquarters location for peacetime organization purposes

4437-443: The Soviet air defence corps were also created. In June–July 1960, all KPVO were enlarged and consisted of: anti-aircraft missile regiments and brigades, air defense fighter regiments, radio engineering regiments and brigades, separate electronic warfare battalions, regiments and battalions of communications and logistics institutions. In many English-speaking countries and other countries influenced by British military traditions,

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4524-414: The army. Major General George B. McClellan , for example, planned to organize the Army of the Potomac into corps of two or more divisions and about 25,000 soldiers. However, he delayed doing so, partly for lack of experienced officers, and partly for political reasons, until March 1862 when President Lincoln ordered their creation. The exact composition of a corps in the Union Army varied during

4611-463: The brigade pattern were created in the Belorussian Military District (Western TVD/Strategic Direction) and the 48th Separate Guards Army Corps in the Transbaikal Military District , but abandoned after a few years. The Soviet Air Forces used ground terminology for its formations down to squadron level. As intermediates between the aviation division and the air army were corps—these also had three air divisions each. An Air Defence Corps ('KPVO')

4698-406: The command of the U.S. Seventh Army . It played a key role in the liberation of the western part of the island. The corps consisted of the 1st Infantry Division (United States), 3rd , 9th , and 45th Infantry Divisions . The Allied campaign in Sicily came to an end after 38 days. Now under Major General Geoffrey Keyes , II Corps was sent to the Italian Front , arriving in mid-November as part of

4785-435: The corps formed during World War I (I and III Corps) and World War II (XVIII Airborne Corps). On 12 February 2020, it was announced that the Army was reactivating V Corps to bolster the presence of US forces in Europe. The first field corps in the United States Army were legalized during the American Civil War by an act of Congress on 17 July 1862, although the term had been used previously to refer to any large portion of

4872-432: The corps. This meant that either civilian workers had to be hired or line soldiers detailed from their units to carry out the necessary tasks. Initially, corps were numbered in relation to their field army, such as I Army Corps, Army of the Potomac. After a while these numerical designations became unique to each corps regardless of the army to which they were assigned. Although designated with numbers that are sometimes

4959-443: The eruption of the Philippine–American War ), and like the corps of the Civil War, their lineage ends at that point. During World War I, the American Expeditionary Forces (AEF) adopted the common European usage of designating field corps by Roman numerals . Several " corps areas " were designated under the authority of the National Defense Act of 1920 , but played little role until the Army's buildup for World War II. While some of

5046-410: The first Battle of Monte Cassino , to distract German attention away from the Anzio landings . The operation failed with heavy losses in the 36th Division. During the fourth and final battle of Cassino in May, II Corps consisted of the 85th and 88th Infantry Divisions . For the assault of the German Gothic Line , II Corps consisted of the 34th , 88th and 91st Infantry Divisions . The corps moved up

5133-478: The first formal combined-arms groupings of divisions with reasonably stable manning and equipment establishments. Napoleon I first used the corps d'armée in 1805. The use of the corps d'armée was a military innovation that provided Napoleon I with a significant battlefield advantage in the early phases of the Napoleonic Wars . The corps was designed to be an independent military group containing cavalry, artillery and infantry, and capable of defending against

5220-428: The formation was first named as such in 1805. The size of a corps varies greatly, but two to five divisions and anywhere from 40,000 to 80,000 are the numbers stated by the US Department of Defense. Within military terminology a corps may be: These usages often overlap. Corps may also be a generic term for a non-military organization , such as the US Peace Corps and European Solidarity Corps . In many armies,

5307-548: The hat badge and lanyard of their corps (e.g. a clerk posted to an infantry battalion would wear the hat badge of the Royal Australian Ordnance Corps but would wear the lanyard of the battalion they are posted to). In Canada , with the integration of the Canadian Army into the Canadian Forces , the British corps model was replaced with personnel branches , defined in Canadian Forces Administrative Orders (CFAOs) as "...cohesive professional groups...based on similarity of military roles, customs and traditions." CFAO 2-10) However,

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5394-416: The lower numbered corps were used for various exercises, the inter-war years corps served mostly as a pool of units. During that war, the Marine Corps organized corps headquarters for the first time, the I Marine (later III Amphibious Corps ) and V Amphibious Corps . The Army ultimately designated 25 field corps (I–XVI, XVIII–XXIV, XXXVI, and I Armored Corps ) during World War II. After the Korean War ,

5481-427: The northeast. It also assigned personnel to active duty during the Vietnam War when its headquarters was moved to Fort Wadsworth , New York. The corps was inactivated on 5 June 1970. Corps Corps ( / k ɔːr / ; plural corps / k ɔːr z / ; from French corps , from the Latin corpus "body") is a term used for several different kinds of organization. A military innovation by Napoleon I ,

5568-435: The place of the corps before and during World War II . An example would be Independent Operational Group Polesie . The groups, as the name indicates, were more flexible and showed greater capacity to absorb and integrate elements of broken units over a period of just a couple days and keep cohesion during the September Campaign than more traditional army units such as divisions, regiments, or even brigades. Wellington formed

5655-415: The rest of the corps were disbanded. In July 1947, all KPVO were renamed anti-aircraft artillery corps. In January 1949, part of these corps was reorganized into air defence areas. From December 1948 to January 1949, all anti-aircraft artillery corps were disbanded. In June 1954, for the defense of the main industrial and economic centers and regions of the USSR, 10 air defence corps were re-created. At

5742-598: The same as those found in the modern US Army, there is no direct lineage between the 43 Union field corps of the Civil War and those with similar names in the modern era, due to congressional legislation caused by the outcry from veterans of the Grand Army of the Republic during the Spanish–American War . In the Confederate States Army , field corps were authorized in November 1862. They were commanded by lieutenant generals, and were usually larger than their Union Army counterparts because their divisions contained more brigades, each of which could contain more regiments. All of

5829-399: The same time, in addition to anti-aircraft artillery formations, fighter aviation regiments and divisions were included in the corps. Since the late 1950s, anti-aircraft artillery units have been replaced by anti-aircraft missile formations and formations of radio engineering troops. Searchlight and barrage balloon units were also abolished. In the Warsaw Pact countries, groupings similar to

5916-412: The senior-most artillery officer. In general, the other field armies tended to model their organization after the Army of the Potomac, including the gradual development of corps. Corps were commanded by major generals because Congress refused to promote officers past that grade (with the exception of Ulysses S. Grant to lieutenant general in 1864). To assist with their command, generals were allowed

6003-400: The southern flank of the British First Army during the destruction of the remaining Axis forces in North Africa. The war in North Africa ended in May 1943 with almost 250,000 Axis soldiers surrendering, to become prisoners of war . On 10 July 1943, II Corps, commanded now by Major General Omar Bradley , took part in the amphibious invasion of Sicily (codenamed Operation Husky ) under

6090-609: The use of innovative assault tactics devised by the Australian general John Monash. As a result of Pershing's dissatisfaction with the use of US troops the 78th, and 80th Divisions were reassigned and on 23 August 1918 the 33rd Division was moved to the Toul sector. This left just the 27th and 30th Divisions in II US Corps assigned to support the British Expeditionary Force if required. The Divisional artillery brigades of these divisions were also removed and on operations these divisions were supported by Australian or British artillery. It first saw significant action in Europe in August 1918, in

6177-402: The war, the tank and mechanized corps were re-rated as divisions. During the reforms of 1956–58, most of the corps were again disbanded to create the new combined arms and tank armies. A few corps were nevertheless retained. The Vyborg and Archangel Corps of the Leningrad Military District were smaller armies with three low-readiness motorized rifle divisions each. In the 1980s "Unified Corps" on

6264-468: The war, though it usually consisted of between two and six division (on average three) for approximately 36,000 soldiers. After Ambrose Burnside was given command of the Army of the Potomac in November 1862, he reorganized it into three "grand divisions" of two corps and a cavalry division each, but this structure was abolished when Joseph Hooker took over February 1863. This also led to the creation of

6351-623: The western side of Italy, and fought in the Spring 1945 offensive in Italy , where it ended up on the right flank of the Fifth Army in May 1945. II Corps was inactivated in Austria on 10 October 1945, following Germany's surrender. In March 1958, Camp Kilmer , New Jersey , became headquarters for the reactivated II Corps as the controlling headquarters for United States Army Reserve units across

6438-530: Was New York City. On 1 October 1933, the corps headquarters was partially activated at Fort Jay, NY, with Regular Army personnel from Headquarters, Second Corps Area and Reserve personnel from the corps area at large. Though a "Regular Army Inactive" unit from 1933 to 1940, the corps headquarters was organized provisionally for short periods using its assigned Reserve officers and staff officers from Headquarters, Second Corps Area. These periods of provisional Active Duty were generally for CPXs and major maneuvers such as

6525-623: Was a phased withdrawal of I Corps to Australia, and the transfer of its headquarters to the Brisbane area, to control Allied army units in Queensland and northern New South Wales (NSW). II Corps was also formed, with Militia units, to defend south-eastern Australia, and III Corps controlled land forces in Western Australia . Sub-corps formations controlled Allied land forces in the remainder of Australia. I Corps headquarters

6612-409: Was a relatively minor battle by the standards of World War I, it was historically significant as the first major offensive operation during the war to involve US infantry, the first occasion on which US units fought alongside British Empire forces, and a demonstration that the previously inexperienced American troops could play an effective role in the war. The battle was also historically significant for

6699-574: Was apparently unable to handle the formations, and the armies and corps were integrated. Rifle corps were re-established during the war after Red Army commanders had gained experience handling larger formations. Before and during World War II, however, Soviet armoured units were organized into corps. The pre-war mechanized corps were made up of divisions. In the reorganizations, these "corps" were reorganized into tank brigades and support units, with no division structure. Owing to this, they are sometimes, informally, referred to as "brigade buckets". After

6786-777: Was attached to the Australian Corps as part of British Fourth Army . The Corps was involved in the Battle of St Quentin Canal , during which it suffered heavy losses. The II Corps HQ took over the front from 6 October 1918 relieving the Australian Corps. In turn it was relieved in the line on 20 October by the IX British Corps. Its Organisation for this phase was: 27th Division, 30th Division, 301 US Tank Battalion (Mk V tanks) Attached troops 3 Squadron Australian Flying Corps, VII Corps RA (British), VII Corps HA (British), 4th Tank Bde (British), 1st Tank Bn (Mark V Star), 4th Tank Bn (Mark V). The 301 US Tank battalion remained in support of

6873-576: Was combined with the 13th Australian Brigade in what was called the Liaison Force commanded by Brigadier General E A Wisdom. This was designed to hold the front from the Somme to the Bray-Sur-Somme-Corbie road to relieve the 4th Australian Division from the operation. After this it returned to the 33rd US Division. Advances made during a secondary assault by the Australian Corps ( Battle of Albert ) on 21–23 August, were exploited by

6960-575: Was completely defeated on the northern sector, so subsequent Fourth Army operations concentrated on the southern sector, handing control of the northern sector to the Reserve Army . The plan for the Fourth Army during the Third Battle of Ypres (31 July – 10 November 1917), was to mount Operation Hush , an amphibious invasion of the Belgian coast. Once the Germans had been pushed back from

7047-692: Was en route to home stations on 7 December 1941. Six months after the Japanese attack on Pearl Harbor and the American entry into World War II , II Corps was sent to England in June 1942, under the command of Major General Mark W. Clark . In November, now under Major General Lloyd Fredendall , II Corps landed in Oran as part of Operation Torch , the Allied invasion of French North Africa . After initially making good headway against German forces during

7134-586: Was formed in France on 5 February 1916, under the command of Sir Henry Rawlinson . It was created in preparation for the Battle of the Somme after the French Tenth Army was transferred to the Battle of Verdun . On the first day on the Somme , eleven Fourth Army divisions (from XIII Corps , XV Corps , III Corps , X Corps and VIII Corps ) attacked astride the Albert–Bapaume road. The attack

7221-748: Was held at corps, or army level or higher. The corps became the basic tactical unit of the NRA having strength nearly equivalent to an allied division . The modern People's Liberation Army Ground Force group army ( 集团军 ) is the closest equivalent of a corps. After the military reforms of the early 2010s, a typical PLA group army consists of six combined arms brigades, plus additional artillery, air defence, engineering, sustainment, special operations and army aviation assets. Each formation contains approximately 30,000 combat troops and several thousands more supporting personnel. The French Army under Napoleon I used corps-sized formations ( French : corps d'armée ) as

7308-634: Was later assigned control of the New Guinea campaign . In early 1945, when I Corps was assigned the task of re-taking Borneo , II Corps took over in New Guinea. Canada first fielded a corps-sized formation in the First World War; the Canadian Corps was unique in that its composition did not change from inception to the war's end, in contrast to British corps in France and Flanders. The Canadian Corps consisted of four Canadian divisions. After

7395-527: Was raised in 1914, consisting of Australian and New Zealand troops, who went on to fight at Gallipoli in 1915. In early 1916, the original corps was reorganized and two corps were raised: I ANZAC Corps and II ANZAC Corps . In the later stages of World War I, the five infantry divisions of the First Australian Imperial Force (AIF)—consisting entirely of personnel who had volunteered for service overseas—were united as

7482-459: Was said to have deliberately chosen the date as a gesture and motivator to the American infantry attached to his corps.) Individual platoons, from four companies of the 131st Infantry and 132nd Infantry, were distributed among Australian battalions, to gain combat experience. This, however, occurred without official approval as there was controversy regarding the battlefield command of US troops by junior officers from other countries. Thus, while Hamel

7569-413: Was used almost in all European armies after Battle of Ulm in 1805. In Prussia it was introduced by Order of His Majesty ( German : Allerhöchste Kabinetts-Order ) from 5 November 1816, in order to strengthen the readiness to war. The Indian Army has 14 corps , each commanded by a general officer commanding (GOC), known as the corps commander, who holds the rank of lieutenant general . Each corps

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