Company Sergeant Major

A Company sergeant major (CSM), is the senior non-commissioned soldier of a company in the armies of many Commonwealth countries, responsible for administration, standards and discipline. In combat, his prime responsibility is the supply of ammunition to the company. He also oversees the distribution of other supplies such as water or food; although that responsibility mainly is the company quartermaster sergeant's (CQMS), and evacuating the wounded and collecting prisoners of war.

For military units of the same level as company, the equivalent may be squadron sergeant major (SSM) or battery sergeant major (BSM). In the Household Cavalry, squadron corporal major (SCM) is the equivalent. First sergeant and Hauptfeldwebel are the United States Army and German Heer equivalents respectively.