Fifth Army (United Kingdom)

Fifth Army
5th Army formation sign; first (left) and second (right) patterns.
Active1916–1918
CountryUnited Kingdom
BranchBritish Army
TypeArmy
RoleOperations on the Western Front, 1916–1918
SizeVaried
EngagementsFirst World War
Commanders
Notable
commanders
Hubert Gough
Henry Rawlinson
William Peyton
William Birdwood
Lieutenant General Hubert de la Poer Gough

The Fifth Army was a field army of the British Army during World War I that formed part of the British Expeditionary Force on the Western Front between 1916 and 1918. The army originated as the Reserve Corps during the preparations for the British part of the Somme Offensive of 1916, was renamed Reserve Army when it was expanded and became the Fifth Army in October 1916.