Academy sergeant majorThe academy sergeant major is the senior non-commissioned officer instructor at a military academy.British ArmyAt the British Army's Royal Military Academy Sandhurst, the academy sergeant major holds the rank of warrant officer class 1. Almost always held by a guardsman, it is one of the most senior warrant officer appointments in the British Army.Australian Defence ForceAt the Australian [Defence Force Academy], the academy sergeant major also holds the rank of warrant officer class 1 or equivalent and is drawn on rotation from all three services.Sri Lanka ArmyAt the Sri [Lanka Military Academy], the academy sergeant major is of the rank of warrant officer class I.