Any ranks above this point are looking at command on small ships, or commander of a Battalion around 800-1000 men in size, and consequently have little to do on the front line.
Captains and Majors are the marshals of the forces on the ground, and occasionally get on with the job. However, in ship to ship operations, Above Water Warfare Petty Officers and Chief Petty Officers are the ones who are usually the ones on the pointy end of the stick.
If you're looking about Armsmen leading a boarding a party, it's usually a Petty Officer, or Leading Hand, with 4-9 Leading Hands, or a Sergeant, supported by a couple of Fire Teams (Cpl/LCpl with 3 Privates).
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