Military land force (4)
I believe the answer is:
army
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">military land force</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for army that I've seen before include "Military land forces" , "Collective term for caterpillars" , "Ground forces" , "See 6" , "Land-fighting force" .)