Noun sergeant first class has 1 sense

1. first sergeant, sergeant first class - a sergeant in the army above the rank of staff sergeant and below master sergeant
   --₁ is a kind of sergeant
   --₁ has particulars: orderly sergeant
   

Sergeant First Class

Noun:

1. A noncommissioned officer rank in the military, typically above sergeant and below master sergeant. In the United States Army, the rank of Sergeant First Class is designated by three chevrons above three arcs.

Example Sentence: The Sergeant First Class led the platoon into battle with exceptional skill and courage.

2. An experienced soldier who serves as a mentor and role model for junior enlisted personnel. They provide guidance and leadership within their unit.

Example Sentence: The newly assigned private sought advice from the Sergeant First Class on how to improve his marksmanship.

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