British private soldier (5)
I believe the answer is:
tommy
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">british private soldier</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 tommy that I've seen before include "Private in the Army - kind of gun" , "Private soldier (slang)" , "British soldier (informal)" , "British private soldier (colloq.)" , "Doubtful apostle could be so familiar" .)