LCol Warren was Personal Assistant to Field Marshal Montgomery (Commander 21st Army Group) from January 1944 to the end of the war. Personal Assistant was the senior position on Montgomery’s staff. Warren and had previously served as Aide de Camp (ADC) to Montgomery while he commanded British Eighth Army.
Trumbull “Trum” Warren was a 48th Highlander from 1934 and went overseas with the 1st Battalion, 48th Highlanders, in 1939. His father, Captain Trumbull Warren was killed while serving with 15th Battalion (48th Highlanders) on the Ypres Salient in 1915. He served as Honorary Lieutenant-Colonel of the 48th Highlanders from 1972-1977 and Honorary Colonel from 1977-1979. In civilian life he was President of Rheem Canada and active in the Royal Winter Fair, serving as President in 1974.