When the Volunteer Force was replaced by the Territorial Force on 1 April 1908, his unit was split up: Stradbroke became Honorary Colonel of the 1st East Anglian Brigade, Royal Field Artillery (TF) (which contained the Norfolk batteries), while remaining lieutenant colonel commanding the 3rd East Anglian (Howitzer) Brigade (which contained the Suffolk batteries). He led the 3rd East Anglian Brigade and its successor units on active service on the Western Front in Egypt and Palestine during the First World War. He was awarded the Territorial Decoration, appointed a Commander of the Order of the British Empire in 1919 and a Knight Commander of the Order of St Michael and St George in 1920.