Green Beret (8)
I believe the answer is:
commando
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">green beret</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 commando that I've seen before include "Soldier trained to carry out dangerous raids" , "A specially trained soldier" , "Shock troop unit" , "Specialist soldier" , "Army unit" .)