Duncan Forbes (Royal Marines officer)

Major-General Duncan Graham Forbes is a senior Royal Marines officer. He served as Assistant Chief of the Naval Staff (Policy) from 2024 to 2025.

Major General Duncan Forbes
Forbes (then Lieutenant Colonel) in 2017
Allegiance	United Kingdom
Branch	Royal Marines
Years of service	–present
Rank	Major-General
Commands	3 Commando Brigade (2022–2024) 45 Commando (2017–2019)
Battles / wars	War in Afghanistan

Military career

Forbes joined the Corps of Royal Marines and was mentioned in despatches for service in Afghanistan in July 2007.^[1] He was deployed to Afghanistan again in spring 2010.^[2] He became commanding officer of 45 Commando in 2017,^[3] Director of the Naval Staff in May 2021, and commander of 3 Commando Brigade in September 2022.^[4][5] Promoted to major-general,^[6] he became Assistant Chief of the Naval Staff (Policy) in March 2024.^[7]