Major Don Leslie (Retired) joined the Canadian Forces in 1975 and was commissioned a Lieutenant following his graduation from College Militaire Royal in 1979. Major Leslie served as an Army Officer in the Logistics Branch of the Canadian Forces until 1997 in assignments across Canada and in Lahr, Germany. He developed specialties in Transportation and Supply including advanced training with the Canadian Force School of Administration and Logistics, the US Army School of Transportation, the US Navy School of Ocean Transportation and Marine Terminal Management, and the McGill University Transportation Management Program. Major Leslie is also a graduate of the Canadian Land Force Command and Staff College.
In 1993, Major Leslie was posted to the Canadian National Defence Headquarters (NDHQ) Joint Staff Logistics Operations (J4 Log), where he was responsible for planning and implementing administrative and logistics support to Canadian contingents on UN and humanitarian missions. Major Leslie provided liaison service with UNHQ through the Canadian Permanent Mission to the UN and participated in several planning conferences for emerging missions. Major Leslie conducted reconnaissance and assessment missions to UNMIH (Haiti), UNAMIR (Rwanda), and UNPROFOR/UNPF (former Yugoslavia). In addition, he worked extensively on Canadian missions in Cambodia, Mozambique, Western Sahara, Cyprus, Iran/Iraq, Kuwait, Nagorny- Karabach, and the Middle East.
Major Leslie was a Canadian delegate to the United Nations Working Group on the Reform of the Methodology for Reimbursement for Contingent-Owned Equipment (COE). Starting in early 1995, the Working Group developed a standard rate reimbursement system for equipment and personnel services employed on peacekeeping missions. Major Leslie participated in the creation of a generic list of equipment that calculated the rates and conditions of service for use by all troop contributors. It was subsequently approved by the General Assembly in 1996 as part of the COE Reform Methodology. Major Leslie was also the NDHQ logistics representative to two projects for the creation of an Operational Level Headquarters at UNNY and a UN Stand-by High Readiness Brigade (SHIRBRIG), for which he prepared the initial logistics concept.
Major Leslie retired from the Canadian Forces in 1997, working as an independent consultant and assisting DND with negotiations for retroactive claims. He went on to work at Accenture (formerly Andersen Consulting) as a Business Process Design Manager in the Supply Chain Management Practice of their Government Market Unit. In 1997, he took time off from this position to be a guest lecturer on the Lester B. Pearson Peacekeeping Centre UN Logistics Course.
In 2001, Major Leslie left Accenture to become a Partner with a HDP Group, an Ottawa-based management consulting firm. He has led the firm's supply chain management practice, working primarily with the Department of National Defence, the Department of Transport, and the Canadian Coast Guard.
Major Leslie is also the author of the course The Provision of Troops and Contingent-Owned Equipment (COE) and the Method for Reimbursement, which he completed in 2004.