Queen's Own
1/1st
August 1914: in Doncaster, part of the Yorkshire Mounted Brigade.
June 1915: Regiment split up: RHQ and B Squadron joined 37th Division; A Squadron joined 17th Division; C Squadron joined 19th Division; this Squadron also had a brief attachment in late April / early May 1916 to 3rd Cavalry Division.
12 May 1916: all units reformed in France, and Regiment redesignated II Corps Cavalry.
October 1917: transferred to Cavalry Corps Troops.
6 December 1917: transferred to the Lucknow Cavalry Brigade of 4th Cavalry Division.
February 1918: on the breaking up of the Division, the Regiment was converted into a cyclist unit. From 16 March 1918 it was II Corps Cyclist Battalion.
2/1st
Formed September 1914, and remained in UK until May 1918 when moved to Ireland. Converted into a cyclist unit in July 1916.
3/1st
Formed in 1915. Remained in United Kingdom until absorbed into 6th Reserve Cavalary Regiment in early 1917.