Company sergeant major
Commonwealth military rank

The 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, their prime responsibility is the supply of ammunition to the company. They also oversee the distribution of other supplies, such as water or food, although that responsibility is mainly that of the company quartermaster sergeant (CQMS), and evacuating the wounded and collecting prisoners of war.
For military units of the same level as a 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 Kompaniefeldwebel (formerly Hauptfeldwebel in the Wehrmacht and Nationale Volksarmee) are the United States Army and German Heer equivalents respectively.
Australia
In the Australian Army, the CSM appointment is the senior warrant officer of a sub-unit (company, squadron or battery) and is normally held by a warrant officer class 2. The CSM is a senior management role focusing on the training, welfare and discipline of a sub-unit of up to 200 soldiers. They also act as senior adviser to the sub-unit commander. The appointment is known as the Company Sergeant-Major (CSM) in all sub-units except for the following:
Squadron Sergeant-Major (SSM) in Armoured, Aviation, Engineer and Signal sub-units
Artificer Sergeant-Major (ASM) in RAEME sub-units
Battery Sergeant-Major (BSM) in Artillery sub-units
Canada
In the Canadian Forces, the CSM appointment is normally held by a master warrant officer.
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