Artillerymen (7)
I believe the answer is:
gunners
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">artillerymen</span>' is the definition.<br/ ><span class="explanation-format__explanation">('gunner' can be a synonym of 'artilleryman')</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for gunners that I've seen before include "Artillerymen" , "Artillery soldiers" , "The RA" .)