1/1st

August 1914 : in Reading. Part of the 2nd South Midland Mounted Brigade, which in August 1914 was attached to the Mounted Division.

September 1914 : Brigade moved to 2nd Mounted Division.

April 1915 : moved to Egypt, and in August 1915, dismounted to Gallipoli

December 1915 : moved to Egypt

January 1916 : Brigade became an independent command and redesignated 6th Mounted Brigade.

February 1917 : Brigade joined Imperial Mounted Division.

June 1917 : Brigade joined Yeomanry Mounted Division.

April 1918 : with the Buckinghamshire Yeomanry, formed C Bn, the Machine Gun Corps

June 1918 : moved via Italy to France

August 1918 : renumbered 101 Bn, Machine Gun Corps

2/1st

Formed September 1914, and remained in UK throughout the war. In July 1916, converted into a Cyclist unit.

3/1st

Formed in 1915. Remained in United Kingdom until early 1917, when absorbed into 6th Reserve Cavalry Regiment.