dutyman

Etymology

From duty + -man.

dutyman means A fully trained soldier who has a specific role. Lexicurio rates it Sui generis — a strength score of 90 out of 100.

noun

A fully trained soldier who has a specific role.“The recruit eventually graduates to become a trained soldier and dutyman, with his place in a troop.”
A man who is on duty in a particular setting.“Some stations were connected directly to the automatic fire alarms of important premises and to call boxes in the street which all had to be tested. So the role of dutyman was complicated and as he had to stay awake all night, this was called a wakeful watch.”