August 1914 : at Somerset House. Part of 4th London Brigade, 2nd London Division. Moved on mobilisation to Bedmond, and then in November to billets at Watford.
18 March 1915 : landed at Le Havre.
11 May 1915 : formation became 140th Brigade in 47th (2nd London) Division.
1/15th (County of London) Battalion (Prince of Wales's Own Civil Service Rifles)
