Military group (4)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">military group</span>' is the definition.<br/ ><span class="explanation-format__explanation">(group of soldiers)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for unit that I've seen before include "detachment maybe" , "Small military detachment" , "Military team" , "Detachment of soldiers" , "One; military group" .)
(Other definitions for army that I've seen before include "Military unit" , "Military land forces" , "fighters" , "A great number (of soldiers?)" , "service" .)