The Royal Horse Guards

August 1914 : stationed at Regent’s Park Barracks in London, also known as Albany Street Barracks.

A cavalry draft. Blues Royal Horse Guards dismounted. Imperial War Museum image Q66195.
A cavalry draft. Blues Royal Horse Guards dismounted. Imperial War Museum image Q66195.

On mobilisation one Squadron left and came under orders of the Household Cavalry Composite Regiment. This Squadron returned in November 1914.

1 September 1914 : regiment moved to Ludgershall and came under orders of 7th Cavalry Brigade in 3rd Cavalry Division.

7 October 1914 : landed at Zeebrugge.

21 November 1914 : transferred to 8th Cavalry Brigade in same Division.

7 November 1917 : transferred to 7th Cavalry Brigade in same Division.

10 March 1918: left the Division and converted into No 3 (Royal Horse Guards) Battalion of the Guards Machine Gun Regiment.

22 May 1918: moved as Army Troops to First Army.

Printed in the "Larne Times", 4 March 1916. A detachment of the regiment's reserve training in the use of the machine gun.
Printed in the “Larne Times”, 4 March 1916. A detachment of the regiment’s reserve training in the use of the machine gun. The reserve unit (a squadron?) was based at Regent’s Park Barracks.

Reading

“The Story of the Household Cavalry” Volume 3 [1914-1918] by Captain Sir George Arthur assisted by Captain Shennan (available as free PDF from Archive.org)