Military land forces (6)
I believe the answer is:
armies
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">military land forces</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 armies that I've seen before include "Fighting forces" , "Hosts" , "Large groups of soldiers" , "Multitudes" , "Organizations of military land forces" .)