sergeant major
noun/ˌsɑːdʒənt ˈmeɪdʒə(r)/
/ˌsɑːrdʒənt ˈmeɪdʒər/
often used as a title- a soldier of middle rank in the British army who is responsible for helping the officer who organizes the affairs of a particular regiment (= a large group of soldiers)
- Sergeant Major Phillips
- a soldier in the US army of the highest rank of non-commissioned officers
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sergeant major