Fifth Army (United Kingdom)

Fifth Army
5th Army formation sign; first (left) and second (right) patterns.
Active	1916–1918
Country	United Kingdom
Branch	British Army
Type	Army
Role	Operations on the Western Front, 1916–1918
Size	Varied
Engagements	First World War
Commanders
Notable commanders	Hubert Gough Henry Rawlinson William Peyton William Birdwood

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.