1/1st

August 1914 : in Sherborne. Part of the 1st South Western Mounted Brigade. In September 1914, moved to 2nd South Midland Mounted Brigade, in 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.

July 1918 saw a complete redesignation: the Brigade became the 10th Cavalry Brigade, the Division the 4th Cavalry Division. The Regiment remained with them in Palestine until the end of the war.

2/1st

Formed September 1914, and remained in UK until in July 1916, converted into a Cyclist unit. Took over the horses from 2/1st West Kent Yeomanry in November 1916, becoming a mounted unit again. Became Cyclists again in September 1917, and moved to Ireland in early 1918.

3/1st

Formed in 1915. Remained in United Kingdom until disbanded in early 1917.