Flight Lieutenant Oldham had previously been employed as teller and accountant with the Royal Bank of Canada at two branches in Vancouver, British Columbia from July 1938 until he enlisted in October 1941
Upon completion of his training Flight Lieutenant Oldham graduated third in a class of 1942 pilots and was posted as staff pilot instructor at #5 Bombing and Gunnery School in Dafoe, Saskatchewan. He was posted overseas in October 1944 and attached to 603 Squadron RCAF
