21st Division or 21st Infantry Division may refer to:

Infantry divisions

21st Division (People's Republic of China) The 21st Division () was a short-lived division of the Chinese People's Liberation Army which was in service both during and after the Chinese Civil War. The division was created in June 1949 by ''the Regulation of the Re-Designations of All Organi ...

21st Infantry Division (France) The 21st Infantry Division () was a French Army formation during World War I and World War II. World War 1 During World War I, the division was composed of the 64th, 93rd and 137th Infantry Regiments, the 97th Territorial Infantry Regiment, and ...

21st Division (German Empire) The 21st Division (''21. Division'') was a unit of the Prussian/German Army. It was formed on October 11, 1866, and was headquartered in Frankfurt am Main. The division was subordinated in peacetime initially to the XI Army Corps (''XI. Armeekor ...

21st Reserve Division (German Empire) The 21st Reserve Division (''21. Reserve-Division'') was a unit of the Imperial German Army during World War I. The division was formed upon mobilization of the German Army in August 1914 as part of XVIII Reserve Corps. The division was disban ...

21st Infantry Division (Wehrmacht) The 21st Infantry Division was a German military unit which fought during World War II. History The 21st Infantry Division (Germany) was formed in 1934 in Elbing, East Prussia, by expanding the 3rd Prussian Infantry Regiment of the 1st Divisi ...

, Germany * 21st Waffen Mountain Division of the SS ''Skanderbeg'', Germany *

21st Infantry Division (India) The 21st Infantry Division is a division of the Indian Army raised in 1943. History The Formation was raised as 21 Indian Infantry Division at Secunderabad on 03 Apr 1943 and subsequently employed under Gen William Slim's 14th Army during 'Reco ...

* 21st Infantry Division (Iran) *

21st Infantry Division Granatieri di Sardegna First most commonly refers to: * First, the ordinal form of the number 1 First or 1st may also refer to: Acronyms * Faint Images of the Radio Sky at Twenty-Centimeters, an astronomical survey carried out by the Very Large Array * Far Infrared a ...

, Kingdom of Italy *

21st Division (Imperial Japanese Army) The was an infantry division in the Imperial Japanese Army. Its tsūshōgō code name was the . The 21st Division was created on 4 April 1938 as a triangular division as part of the military buildup following the outbreak of the Second Sino-Japa ...

21st Mountain Infantry Division (Poland) The 21st Mountain Infantry Division (, 21 DPG) Apoloniusz Zawilski: Bitwy polskiego września. Kraków: Znak Horyzont, 2019. ISBN 978-83-240-5692-7. P794 was a pre-war unit of the Polish Army. It was one of two mountain infantry divisions of Pola ...

21st Infantry Division (Russian Empire) The 21st Infantry Division (, ''21-ya Pekhotnaya Diviziya'') was an infantry formation of the Russian Imperial Army. Organization *1st Brigade **81st His Imperial Highness Grand Duke George Mikhailovich's Apsheron Infantry Regiment **82nd His Impe ...

21st Division (South Vietnam) The 21st Division (; Chữ Hán: 師團21) of the Army of the Republic of Vietnam The Army of the Republic of Vietnam (ARVN; ; ) composed the ground forces of the Republic of Vietnam Military Forces, South Vietnamese military from its inception ...

* 21st Division (Spain) *

21st Division (United Kingdom) The 21st Division was an infantry division of the British Army during World War I, raised in September 1914 by men volunteering for Lord Kitchener's New Armies. The division moved to France in September 1915 and served on the Western Front f ...

Cavalry divisions

21st Cavalry Division (United States) The United States Army's 21st Cavalry Division was a cavalry division (military), division of the National Guard (United States), National Guard with units located primarily in the northeastern United States. The division was created from the per ...

Armoured divisions

21st Panzer Division (Wehrmacht) The 21st Panzer Division was a German armoured warfare, armoured division best known for its role in the battles of the North African Campaign from 1941 to 1943 during World War II when it was one of the two armoured divisions making up the Afri ...

, Germany

Aviation divisions

21st Air Division (United States) The 21st Air Division (21st AD) is an inactive United States Air Force organization. Its last assignment was with Tactical Air Command, being stationed at Griffiss Air Force Base, New York. It was inactivated on 23 September 1983. History World W ...

Infantry divisions

Cavalry divisions

Armoured divisions

Aviation divisions

See also