He served in a variety of positions in the Territorial Force throughout the war, commanding the 3/1 Kent Cyclists with the rank of temporary Lieutenant-Colonel until they were reduced to a cadre in 1916 when he transferred to 3/1 West Kent Yeomanry. He spent much of the war in training positions at Crowborough and Tunbridge Wells, reaching the rank of acting Major in the 4th Battalion the Royal West Kent Regiment, a reserve formation. He remained in the Territorial Force after the end of the war and was promoted to the rank of Lieutenant-Colonel in the Territorial Reserve in November 1919.