Derek A. Macaulay

Derek Allen Macaulay, is a Canadian Forces officer serving as a lieutenant-general in the Canadian Army.

Military career Macaulay joined the Canadian Forces as part of the Officer Candidate Training Program in 1989 and was commissioned as an armoured officer in the Lord Strathcona's Horse (Royal Canadians). and then became commander of 5th Canadian Division in May 2017. Macaulay was awarded a Meritorious Service Decoration following his tenure in Iraq in 2015/16.

Macaulay served as deputy commander of United Nations Command from December 2023 until January 2026. He is the second Canadian general to serve deputy commander of the United Nations Command.