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 for the duration of the First World War.
The Division was the first of the six created for the Third New Army on 13 September 1914.
[1] The division suffered 55,581 killed, wounded and missing, being the highest number of casualties suffered by any New Army division.
Brigadier-General (temporary) Edward Loch took command on 22 July 1917.