 Following the attack on Pearl Harbor in December 1941, Norman was interned by the Japanese authorities and he was not repatriated to Canada until mid-1942, where he continued to work in the Department of External Affairs, heading up the Special Intelligence Unit in Ottawa.This Unit prepared biweekly intelligence reports on Japan and the Far East, using mostly decoded messages from the Examination Unit as well as other sources.During the Allied occupation of Japan after its defeat in the war, Norman served as a Canadian representative to the Supreme Commander of the Allied Powers (SCAP) administration and worked under the direction of Douglas MacArthur.