Military subdivision (7)
(Other definitions for squadron that I've seen before include "several planes" , "Military unit" , "Navy, army or air force unit" , "detachment" , "Air, navy, cavalry, group" .)
(Other definitions for regiment that I've seen before include "Military unit" , "Section of an army" , "Organise; army unit" , "Brigade" , "Part of an army" .)
(Other definitions for brigade that I've seen before include "Abridge (anag)" , "Army unit" , "Part of an army division" , "Corps" , "Military group" .)
(Other definitions for platoon that I've seen before include "Military group" , "part of company" , "Company's subdivision" , "Sub-unit of a military company" , "Military squad" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">military subdivision</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for unit that I've seen before include "1 entity" , "Single item; one" , "- - trust" , "Single person - group of people" , "Building block - small military force" .)