The Army Sergeant Major is the most senior member of the other ranks of the British Army. The appointment holder has the rank of Warrant Officer Class One. The appointment was created as part of the changes to the British Army's top ranks around February 2015. The holder will sit on the Executive Committee of the Army Board (ECAB) and work with the Secretary of State for Defence, top civil servants and other high-ranking members to shape British Army policy. The first appointment was made in March 2015.
The Army Sergeant Major wears the Warrant Officer Class 1's usual rank badge within a wreath.