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COMMAND SERGEANT MAJOR (CSM) Command sergeants major are the senior enlisted advisors to the commanding officer. They carry out policies and standards and advise the commander on the performance, training, appearance and conduct of enlisted Soldiers.

Senior Enlisted Advisor to the Chairman (SEAC) is a distinct military position and rank within the United States Department of Defense and is designated the most senior enlisted service member, by position, in the United States Armed Forces.

SEAs are also known as command senior enlisted leaders (CSEL). Always a non-commissioned officer, the SEA is the main link between the commanding officer and the enlisted service members under his or her charge.

COMMAND SERGEANT MAJOR (CSM) Command sergeants major are the senior enlisted advisors to the commanding officer. They carry out policies and standards and advise the commander on the performance, training, appearance and conduct of enlisted Soldiers.

The SEAC is the most senior enlisted service member, by position, in the United States Armed Forces, and serves as the principal military advisor to the Chairman on all matters involving joint and combined total force integration, utilization, health of the force, and joint development for enlisted personnel.

Service senior enlisted advisors ServiceSenior enlisted advisor titleU.S. ArmySergeant Major of the ArmyU.S. Marine CorpsSergeant Major of the Marine CorpsU.S. NavyMaster Chief Petty Officer of the NavyU.S. Air ForceChief Master Sergeant of the Air Force4 more rows

Service senior enlisted advisors ServiceSenior enlisted advisor titleU.S. ArmySergeant Major of the ArmyU.S. Marine CorpsSergeant Major of the Marine CorpsU.S. NavyMaster Chief Petty Officer of the NavyU.S. Air ForceChief Master Sergeant of the Air Force4 more rows

In the United States Army and the United States Marine Corps, the senior enlisted advisor at the company or battery level (or other unit at similar echelon) is a first sergeant.