Sergeants' Mess members with RSM Thomas N. Anderson, 1930s. He was the RSM from 1926 to 1939. On Rear: "H. Caldwell". RSM Thomas Nairn Anderson served in the 103rd Calgary Rifles before World War I and with the 50th Battalion (Calgary), CEF in WW I. Service File attached. The 50th Battalion (Calgary), CEF, was an infantry battalion of the Canadian Expeditionary Force during the Great War. The 50th Battalion was authorized on 7 November 1914 and embarked for Britain on 27 October 1915. The battalion disembarked in France on 11 August 1916, where it fought as part of the 10th Canadian Infantry Brigade, 4th Canadian Division in France and Flanders until the end of the war.18 The battalion was disbanded on 30 August 1920. The 50th Battalion recruited in and was mobilized at Calgary, Alberta Regimental Sergeant-Major Tom Anderson served overseas during the war and later with the Calgary Regiment, had joined the Seaforths in 1923 and was Acting Regimental Sergeant-Major in 1926. He received his Warrant Rank Class I rank on 25 April1927. Anderson's son was to become the Commanding Officer of the regiment in 1966.