Born on 19 February 1892 in Tontah[?], Minnesota - son of John Dalbert McCullock, Fisk, Saskatchewan - at the time of his enlistment in 1916: trade as farmer; single; no current or previous military service; Roman Catholic; height of 5 feet 9 inches; chest of 39 inches fully expanded; light complexion; brown eyes; brown hair.
Joined the 97th Battalion, CEF, in Kindersley, [?], on 28 June 1916 (number 261608) - taken on the strength of the Canadian Labour Pool, CEF, on 19 April 1918 - transferred to the 2nd Canadian Infantry Works Battalion, CEF, on 26 April 1918 - transferred to the 4th Canadian Infantry Works Company, CEF, on 13 September 1918 - transferred to the 38th Battalion, CEF, on 20 September 1918 - invalided sick to England on 24 February 1919.
(sources: Library and Archives Canada (www.collectionscanada.gc.ca), online attestation papers; Canadian War Museum, 19740281-001, Manu 58F 2 3, 207th Canadian Infantry Battalion and 38th Canadian Infantry Battalion, Nominal Roll; The Cameron Highlanders of Ottawa Regimental Museum, A400-0007, Master Personnel List for the 38th Canadian Infantry Battalion, Canadian Expeditionary Force)