Reserve Army (United Kingdom)

Reserve Army
Lieutenant-General Hubert Gough
Active	First World War 1916 (renamed Fifth Army 30 October 1916)
Country	United Kingdom
Branch	British Army
Type	Army
Engagements	Battle of Albert (1916) Battle of Flers–Courcelette Battle of Thiepval Battle of Le Transloy Battle of the Ancre Heights Battle of the Ancre (as the Fifth Army)
Commanders
Notable commanders	Sir Hubert Gough

The Reserve Army was a field army of the British Army and part of the British Expeditionary Force during the First World War. On 1 April 1916, Lieutenant-General Sir Hubert Gough was moved from the command of I Corps and took over the Reserve Corps, which in June before the Battle of the Somme, was expanded and renamed Reserve Army. The army fought on the northern flank of the Fourth Army during the battle and became the Fifth Army on 30 October.