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48-698: The Sixth Area Army ( 第6方面軍 , Dai roku hōmen gun ) was a field army of the Imperial Japanese Army during both the Second Sino-Japanese War and World War II . The Japanese 6th Area Army was formed on August 25, 1944 under the China Expeditionary Army primarily as a military reserve and garrison force for the occupation of the central provinces of China between the Yangtze River and

96-510: A Table of Organization and Equipment (TO&E) which specifies exact assignments of units, personnel, and equipment for a division. The modern division became the primary identifiable combat unit in many militaries during the second half of the 20th century, supplanting the brigade ; however, the trend started to reverse since the end of the Cold War . The peak use of the division as the primary combat unit occurred during World War II , when

144-550: A combined arms force used in modern brigades and divisions, and are no longer granted divisional status. "Light divisions" were German horse cavalry divisions organized early in World War II which included motorized units. The development of the tank during World War I prompted some nations to experiment with forming them into division-size units. Many did this the same way as they did cavalry divisions, by merely replacing cavalry with AFVs (including tanks) and motorizing

192-401: A headquarters, and usually controls at least two corps, beneath which are a variable number of divisions . A battle is influenced at the field army level by transferring divisions and reinforcements from one corps to another to increase the pressure on the enemy at a critical point. NATO armies are commanded by a general or lieutenant general . Division (military) A division is

240-598: A large military unit or formation , usually consisting of between 10,000 to 25,000 soldiers. In most armies, a division is composed of several regiments or brigades ; in turn, several divisions typically make up a corps . Historically, the division has been the default combined arms unit capable of independent operations . Smaller combined arms units, such as the American regimental combat team (RCT) during World War II, were used when conditions favored them. In recent times, modern Western militaries have begun adopting

288-447: A number of cavalry divisions were formed. They were most often similar to the nations' infantry divisions in structure, although they usually had fewer and lighter support elements, with cavalry brigades or regiments replacing the infantry units, and supporting units, such as artillery and supply, being horse-drawn. For the most part, large cavalry units did not remain after World War II . While horse cavalry had been found to be obsolete,

336-792: A numerical name, such as the British Army of the Rhine , Army of the Potomac , Army of the Niemen or Aegean Army (also known as the Fourth Army). The Roman army was among the first to feature a formal field army, in the sense of a very large, combined arms formation, namely the sacer comitatus , which may be translated literally as "sacred escort". The term is derived from their being commanded by Roman emperors (who were regarded as sacred), when they acted as field commanders . While

384-538: A total of six infantry divisions were raised as part of the all-volunteer Australian Imperial Force : 1st , 2nd , 3rd , 4th , 5th and 6th . The 1st Division and part of the 2nd saw service during the Gallipoli Campaign in 1915 before later taking part in the fighting on the Western Front between 1916 and 1918 along with the 3rd, 4th and 5th. The 6th Division existed only briefly in 1917, but

432-605: Is a division with a majority of infantry subunits transported on soft-skinned motor vehicles . A " mechanized infantry " division is a division with a majority of infantry subunits transported on armored personnel carriers (APCs) or infantry fighting vehicles (IFVs) or both, or even some other class of armored fighting vehicles designed for the transportation of infantry. Mechanized infantry divisions in Nazi Germany were called " Panzergrenadier divisions". In Russia, they were known as "motor rifle divisions". Because of

480-660: The Second World War in 1942, although plans were in place since the later stages of the Russian Civil War . An artillery division serves as a specialized division using only artillery howitzers, anti-tank guns, rocket artillery (MRLs and tactical missiles) and mortars (both towed and self-propelled) (and historically siege artillery) and are usually tasked with providing concentrated firepower support to higher combined arms formations. They are mainly combat support formations most performing operations in support of

528-617: The Second World War . Beside the infantry and cavalry divisions created since Napoleonic era, new division types appeared during the Second World War, such as airborne, tank, mechanized, motorized. The Soviet Union's Red Army consisted of more than a thousand division-sized units at any one time, and the number of rifle divisions raised during the Great Patriotic War of 1941–1945 is estimated at 2,000. Nazi Germany had hundreds of numbered or named divisions, while

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576-926: The US 10th Mountain Division , the German 1st Ski Division or the French 27th Alpine Infantry Division . Nazi Germany also organized " Jäger divisions" to operate in more adverse terrain. Italian Mountain divisions are called " Alpini divisions". An airborne division is an infantry division given special training and equipment for arrival on the battlefield by air (typically via parachute or glider-borne). The US, Britain, and Germany experimented during World War II with specialized light infantry divisions capable of being quickly transported by transport aircraft or dropped into an area by parachute or glider. This required both high-quality equipment and training, creating elite units in

624-658: The Yellow River . After the success of Operation Ichi-Go , many veteran units were transferred out of China to fronts in the Pacific War , which left the 6th Area Army to guard gains in central China . The 6th Area Army was demobilized at the surrender of Japan on August 15, 1945 at Hankou (part of modern Wuhan ) in China, without having seen significant combat. Field army Specific field armies are usually named or numbered to distinguish them from "army" in

672-474: The 1944 Operation Market Garden and the 1945 Operation Varsity . When not being used for a specific airborne mission, airborne divisions usually functioned as light infantry divisions. An " air assault division" is an airborne division that mainly uses helicopters to transport its troops. The Soviet Union developed the concept of the specialized "artillery division" during the Eastern Front of

720-673: The German imperial army and about 18,000 in Austro-Hungarian and British armies. As World War I went on, the size of divisions decreased significantly from those of 1914, with both British and Germans reducing the number of divisions' sub-units. But, while the number of soldiers was lower, by 1917, divisions were much better armed. On the other hand, in 1917, the American infantry divisions that arrived in France numbered 28,061 officers and men, of which 17,666 were riflemen. The divisional system reached its numerical height during

768-525: The NKVD in World War II ). In a few cases, NKVD divisions were employed in front-line combat as rifle divisions. Naming examples 1st Division 2nd Infantry Division Division 60 101st Airborne Division Panzer Lehr Division Divisions are commonly designated by combining an ordinal number and a type name (e.g.: "13th Infantry Division"). Nicknames are often assigned or adopted, although these often are not considered an official part of

816-476: The Roman comitatensis (plural: comitatenses ) is sometimes translated as "field army", it may also be translated as the more generic "field force" or "mobile force" (as opposed to limitanei or garrison units). In some armed forces, an "army" is or has been equivalent to a corps-level unit . Prior to 1945, this was the case with a gun ( 軍 ; 'army') within the Imperial Japanese Army , for which

864-593: The United States employed up to 91 divisions. A notable change to divisional structures during the war was completion of the shift from square divisions (composed of two brigades each with two regiments) to triangular divisions (composed of three regiments with no brigade level) that many European armies had started using in World War I . This was done to increase flexibility and to pare down chain-of-command overhead. The triangular division structure allowed

912-574: The Urals. A 1997 report said they were generally composed of four brigades, though later data suggests this was inaccurate. For most nations, cavalry was deployed in smaller units and was not therefore organized into divisions, but for larger militaries, such as that of the British Empire , United States, First French Empire , France, German Empire , Nazi Germany , Russian Empire , Empire of Japan , Second Polish Republic and Soviet Union ,

960-605: The age of 54, without having implemented his idea. Victor-François de Broglie put the ideas into practice. He conducted successful practical experiments of the divisional system in the Seven Years' War . The first war in which the divisional system was used systematically was the French Revolutionary War . Lazare Carnot of the Committee of Public Safety , who was in charge of military affairs, came to

1008-439: The belligerents deployed over a thousand divisions. With technological advances since then, the combat power of each division has increased. Divisions are often formed to organize units of a particular type together with appropriate support units to allow independent operations. In more recent times, divisions have mainly been organized as combined arms units with subordinate units representing various combat arms. In this case,

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1056-528: The concept of cavalry as a fast force capable of missions traditionally fulfilled by horse cavalry made a return to military thinking during the Cold War. In general, two new types of cavalry were developed: air cavalry or airmobile, relying on helicopter mobility, and armored cavalry , based on an autonomous armored formation. The former was pioneered by the 11th Air Assault Division (Test) , formed on 1 February 1963 at Fort Benning , Georgia. On 29 June 1965,

1104-514: The course of time. For instance, in 1944, Nazi Germany designated some of their infantry formations as Volksgrenadier divisions, which were slightly smaller than the regular divisions, with wider issue of sub-machine guns, automatic and anti-tank weapons to reflect the reality that they were to be used in defensive warfare. In 1945, Nazi Germany seconded members of the Kriegsmarine to create "naval divisions", which were of lower quality than

1152-470: The current 1st Armored Division consists of two armored BCTs and a Stryker BCT along with its support troops. Nevertheless, some US division types will retain their mission: The 82nd and 11th airborne divisions have airborne infantry BCTs, while the 10th Mountain Division has only light infantry BCTs. Historically, the Australian Army has fielded a number of divisions. During World War I,

1200-458: The direct organization of the division consists of one to four brigades or battle groups of its primary combat arm, along with a brigade or regiment of combat support (usually artillery ) and a number of direct-reporting battalions for necessary specialized support tasks, such as intelligence , logistics , reconnaissance , and combat engineers . Most militaries standardize ideal organization strength for each type of division, encapsulated in

1248-476: The division often retains the name of a more specialized division, and may still be tasked with a primary role suited to that specialization. An "infantry division" is a military formation composed primarily of infantry units , also supported by units from other combat arms . In the Soviet Union and Russia, an infantry division is often referred to as a "rifle division". A " motorised infantry " division

1296-521: The division was renamed the 1st Cavalry Division (Airmobile) , before its departure for the Vietnam War . After the end of the Vietnam War, the 1st Cavalry Division was reorganised and re-equipped with tanks and armored scout vehicles to form armored cavalry. The concept of a fast-moving, armored reconnaissance force has remained in modern armies, but these units are now smaller and make up

1344-407: The ease and simplicity involved in forming divisions of infantry compared to other formations, infantry divisions have often been the most numerous in historical warfare. Most US divisions during World War II were infantry divisions. Infantry divisions were also expected to travel by foot from place to place, with transport vehicles or pack horses used to augment their travel. Divisions evolved over

1392-588: The end of the Napoleonic Wars , all armies in Europe had adopted it. The composition of divisions varied significantly during the two world wars and, in addition, there was no uniformity of quality, even when divisions had the same composition. The size of infantry divisions deployed by the major belligerents at start of the Great War ranged from about 16,000 in the French and Russian armies to 17,500 in

1440-497: The end of the war, most armoured and infantry divisions have had significant numbers of both tank and infantry units within them. The difference has usually been in the mix of battalions assigned. Additionally, in some militaries, armoured divisions are equipped with more advanced or powerful tanks than other divisions. Mountain divisions are infantry divisions given special training and equipment to operate in hilly, mountainous or arctic areas . Some examples of these formations include

1488-612: The formation equivalent in size to a field army was a hōmen-gun ( 方面軍 ; 'area army'). In the Soviet Red Army and the Soviet Air Forces , an army was subordinate in wartime to a front (an equivalent of army group ). It contained at least three to five divisions along with artillery, air defense, reconnaissance and other supporting units. It could be classified as either a combined arms army (CAA) or tank army (TA); and while both were combined arms formations,

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1536-458: The former contained a larger number of motorized rifle divisions while the latter contained a larger number of tank divisions . In peacetime, a Soviet army was usually subordinate to a military district . Modern field armies are large formations which vary significantly between armed forces in size, composition, and scope of responsibility. For instance, within NATO a field army is composed of

1584-592: The infantry and armor. Nazi Germany organized Security divisions to operate in captured territory to provide rear-echelon security against partisans and maintain order among civilians. Structured like an infantry division, a security division was more likely to contain lower quality troops and was not intended to serve directly at the front. SS units of this type were called "SS Polizei divisions". The Soviet Union's People's Commissariat for Internal Affairs (the NKVD ) organized security divisions (see Category:Divisions of

1632-583: The infantry divisions of the Heer . They also created " Luftwaffe field divisions" from members of the Luftwaffe . Infantry divisions were sometimes given the responsibility of garrison work. These were named "frontier guard divisions", "static infantry divisions" and "fortress divisions", and were used often by Nazi Germany. The Soviet Union organised Machine-Gun Artillery Divisions of artillery, multiple rocket launchers, and static gun positions for use East of

1680-554: The process and usually crewed by volunteers rather than conscripts. The German 1st Parachute Division , which was part of the Luftwaffe and not the Heer , was instrumental in the 1941 Battle of Crete . US and British airborne troops first participated during the 1943 invasion of Sicily . The use of airborne divisions during the Invasion of Normandy was crucial to its success. Further allied paratroop operations were made during

1728-755: The regiments. These units were mainly support units in nature, and included signal companies, medical battalions, supply trains and administration. Attached units were smaller units that were placed under divisional command temporarily for the purpose of completing a particular mission. These units were usually combat units such as tank battalions, tank-destroyer battalions or cavalry-reconnaissance squadrons. In modern times, most military forces have standardized their divisional structures. This does not mean that divisions are equal in size or structure from country to country, but divisions have, in most cases, come to be units of 10,000 to 15,000 soldiers with enough organic support to be capable of independent operations. Usually,

1776-418: The same conclusion about it as the previous royal government, and the army was organised into divisions. It made the armies more flexible and easy to maneuver, and it also made the large French Revolutionary Army manageable. Under Napoleon , the divisions were grouped together into corps , because of their increasing size. Napoleon's military success spread the divisional and corps system all over Europe; by

1824-418: The sense of an entire national defence force or land force. In English , the typical orthographic style for writing out the names field armies is word numbers , such as "First Army"; whereas corps are usually distinguished by Roman numerals (e.g. I Corps) and subordinate formations with ordinal numbers (e.g. 1st Division). A field army may be given a geographical name in addition to or as an alternative to

1872-426: The size of the division rarely makes such obfuscation necessary. In the years leading up to the end of the cold war and beyond, the type names of various divisions became less important. The majority of US Infantry divisions were now mechanized and had significant numbers of tanks and IFVs, becoming de facto armored divisions. US armored divisions had more tanks but less infantry than these infantry divisions. Moreover,

1920-495: The smaller brigade combat team (similar to the RCT) as the default combined arms unit, with the division to which they belong, being less important. A similar word, divizion/divizijun/dywizjon , is also used in languages such as Russian, Serbian, Croatian and Polish, for a battalion -size artillery or cavalry unit. In naval usage " division " has a completely different range of meanings. Aboard ships of British Royal Navy tradition,

1968-516: The sole cavalry division was structured the same way as an armored division. With the introduction of modular brigade combat teams (BCT) in modern divisions, the nomenclature type is even less important, since a division can now be made of up any combination of light infantry, Stryker and armored BCTs. For example, the US 1st Infantry Division currently consists of two armored BCTs along with support troops, with no light infantry units at all. By contrast,

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2016-562: The supporting units. This proved unwieldy in combat, as the units had many tanks but few infantry units. Instead, a more balanced approach was taken by adjusting the number of tank, infantry, artillery, and support units. The terms "tank division" or "mechanized division" are alternative names for armored divisions. A " Panzer division " was an armoured division of the Wehrmacht and the Waffen-SS of Germany during World War II . Since

2064-399: The tactic of "two forward, one back", where two of the division's regiments could engage the enemy with one regiment in reserve. All divisions in World War II were expected to have their own artillery formations, usually (depending upon the nation) the size of a regiment. Divisional artillery was occasionally seconded by corps-level command to increase firepower in larger engagements. During

2112-401: The terms "division" or "department" are often used interchangeably and refer to the administrative organization used to manage personnel. Aboard US navy ships (including US coastguard vessels), in shore commands and in US naval aviation units (including US navy, marine corps, and coastguard aviation) it refers to an administrative/functional sub-unit of a department (e.g., fire control division of

2160-530: The unit's nomenclature , with divisions of the Italian Army being one of the exceptions. In some cases, divisional titles lack an ordinal number, often in the case of unique units or units serving as elite or special troops. For clarity in histories and reports, the nation is identified before the number. This also helps in historical studies, but due to the nature of intelligence on the battlefield, division names and assignments are at times obscured. However,

2208-473: The war the US also used regimental combat teams , whereby attached and/or organic divisional units were parceled out to infantry regiments, creating smaller combined-arms units with their own armor and artillery and support units. These combat teams would still be under divisional command but had some level of autonomy on the battlefield. Organic units within divisions were units which operated directly under divisional command and were not normally controlled by

2256-452: The weapons department). Alternatively it refers to a sub-unit of several ships within a flotilla or squadron , or to two or three sections of aircraft operating under a designated division leader. In the West, the first general to think of organizing an army into smaller combined-arms units was Maurice de Saxe (d. 1750), Marshal General of France , in his book Mes Rêveries . He died at

2304-554: Was disbanded without seeing combat to make up for manpower shortages in the other divisions. Another infantry division, known as the New Zealand and Australian Division , was also formed from Australian and New Zealand troops and saw service at Gallipoli. Two divisions of Australian Light Horse were also formed – the Australian Mounted Division (which also included some British and French units) and

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