Rear-Admiral Gardam enrolled in the militia in 1975 as a Private in the Queen's Own Cameron Highlanders and subsequently transferred to the Naval Reserves in 1977 and the Regular Force in 1981. His extensive sea time has been primarily concentrated in the Atlantic Fleet where he earned his watchkeeping certificate in HMCS HURON and subsequently served as Weapons Directing Officer, Diving Officer and Navigating Officer. He then broadened his sea experience as Executive Officer of HMCS MIRAMICHI, Combat Officer of HMCS GATINEAU, Combat Officer Sea Training Atlantic, and as Executive Officer HMCS HALIFAX.
Rear-Admiral Gardam's command experience includes HMCS HALIFAX while serving as Executive Officer, HMCS CHARLOTTETOWN, Commander Sea Training Atlantic, HMCS ATHABASKAN and Commandant of the Canadian Forces Maritime Warfare centre. As the acting Commanding Officer in HMCS HALIFAX he participated in a Joint Maritime Command exercise off the coast of Scotland as the Commander of the Anti-surface Task Group. During his tenure in Sea Training he was responsible for preparing the Atlantic Fleet to deploy to the Persian Gulf as part of Task Force-151 which was tasked with the mission to counter the threat against terrorism. While in HMCS ATHABASKAN he assumed the duties as the Flag Captain for the Atlantic Fleet and participated in Op UNISON in support of disaster relief after Hurricane Katrina and was the Flag Ship during a six-month NATO deployment.
Rear-Admiral Gardam's appointments ashore include the Senior Staff Officer Submarine Manning and Training, Detachment Commander of Naval Training Detachment in Halifax, Director Maritime Policy Operations and Readiness for the Chief of the Maritime Staff, Director General Plans for the Strategic Joint Staff working for the Chief of the Defence Staff, and Deputy Director General International Security Policy within the policy group working for the Associate Deputy Minister Policy.
Rear-Admiral Gardam holds a Bachelors Degree from the University of Winnipeg and is a graduate of the Command and Staff College Course and the National Security Studies Program in Toronto. Rear-Admiral Gardam was appointed Commander Joint Task Force Atlantic and Commander Maritime Forces Atlantic in August 2010