Commander Lamont received his B.A. from the University of Western Ontario, and graduated from the University of Ottawa with his LL.B degree in 1977. He was called to the Ontario Bar in 1980, and was a member of the bars of both Alberta and the North West Territories. Immediately prior to his appointment as a Military Judge, Cdr Lamont was a reserve force legal officer and counsel with the Criminal Law Branch of the Department of Justice. He has extensive experience in both civilian and military justice systems including working as a Provincial Crown Attorney during an exchange with the Ottawa Crown Attorney's Office.
At the time of his appointment, Cdr Lamont was the Deputy Assistant Judge Advocate General for central region, responsible for supervising reserve force legal officers within Ontario. Cdr Lamont has also assisted the Director of Military Prosecutions, and has been the legal adviser to 33 BDE HQ and various reserve force units in the Ottawa area. Cdr Lamont has been a prosecutor and defending officer at Courts Martial, and has argued appeals before the Court Martial Appeal Court of Canada.