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In both the Army and the Marine Corps this is the highest enlisted rank. The Sergeant Major is the biggest, baddest, oldest, and ugliest, enlisted soldier in the Battalion. The Command Sergeant Major is the senior enlisted advisor to the Battalion level (or higher) commander. He or she represents all of the enlisted people in the unit. The top dog (enlisted) in the Army or the Marine Corps is called Command Sergeant Major of the Army (Marine Corps).
In my military experience the Command Sergeant Major was highly respected by both officers and enlisted soldiers and was treated with reverence even by high ranking officers. He is the example of wisdom and strength to all in the command. He had to rise above a multitude of others to attain the rank of Sergeant Major and he is the most experienced soldier in the unit. There are many companies that have designed Sergeant Majors Rings to commemorate this rank.
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