Originally a Montréal native, Roger Girouard began his naval service at HMCS CARLTON in Ottawa as a Naval Reserve Ordinary Seaman Bos’n in 1973, before shifting to the permanent force and taking a commission as a Maritime Surface officer.
Becoming a qualified Destroyer Navigator, he navigated HMCS OTTAWA and participated in his Standing Naval Force Atlantic deployment and then the training destroyer HMCS QU’APPELLE before being assigned to VENTURE, the Naval Officer Training Centre. He completed the Combat Control Officer Course in 1984, then served as Weapons Officer aboard HMCS ALGONQUIN. In July of 1985 he was appointed as Commanding Officer of HMCS CHALEUR. Promoted to Lieutenant-Commander in January 1986, he undertook command of HMCS MIRAMICHI. Next, he served as Officer Commanding the Maritime Command Detachment in Argentia, Newfoundland, from July 1987 to August 1989, serving with the US Navy doing ocean surveillance.
He was appointed as Executive Officer in HMCS ATHABASKAN in January 1990, participating in OP FRICTION as part of the Gulf War in 1991. He was promoted to Commander and given the opportunity to participate in the international Naval Command College. Upon graduation in 1992, he was assigned to the Personnel Branch of Maritime Command Headquarters, where he served as Senior Staff Officer for Personnel, Plans and Policies.
In July 1994, he was appointed as Commanding Officer of HMCS IROQUOIS, completing her class modernization project trials and transferring the ship to full operational status in First Maritime Operations Group as flagship. Promoted to Captain in June 1996, he was assigned as the Deputy Commander Naval Reserve at the Naval Reserve Headquarters at Pointe-à-Carcy in Québec City.