21st Division (United Kingdom)

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21st Division
British 21st Division insignia.png
Active 1914 - May 1919
Country  United Kingdom
Branch  British Army
Type Infantry

World War I

Battle of Loos
Battle of the Somme
Battle of Arras (1917)
Battle of Passchendaele
Battle of Cambrai (1917)

The British 21st Division was a New Army division raised in September 1914. The division moved to France in September 1915 and served on the Western Front for the duration of the First World War.

The division's insignia was the "triple-seven".

Unit history[edit]

The Division was the first of the six created for the Third New Army on 13 September 1914. The division suffered 55,581 killed, wounded and missing, being the highest number of casualties suffered by any New Army division.[1] The Division ceased to exist on 19 May 1919.


62nd Brigade
63rd Brigade

In July 1916 the brigade moved to the 37th Division, swapping with the 110th Brigade.

64th Brigade
110th Brigade

In July 1916 the brigade joined from the 37th Division, swapping with the 63rd Brigade.



The division took part in the Battle of Loos, Battle of the Somme, Battle of Arras, Battle of Passchendaele and Battle of Cambrai.[1]


During its existence, 21st Division had the following commanders:[2]

See also[edit]



  • Becke, Major A.F. (1938). Order of Battle of Divisions Part 3A. New Army Divisions (9–26). London: His Majesty's Stationery Office. ISBN 1-871167-08-6. 

External links[edit]