Senior Army officer (7)
I believe the answer is:
general
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">senior army officer</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 general that I've seen before include "Military commander" , "Rank; normal, usual" , "Enlarge (anag.)" , "Not specialised or limited" , "Officer of the highest rank" .)