Individual forms part of squad? (4)
I believe the answer is:
unit
I believe this clue is a triple definition!
'individual' is the first definition.
(I've seen this in other clues)
'forms' is a link.
'part' is the second definition.
(unit is a kind of part)
'of' acts as a link.
'squad?' is the third definition.
(both can mean a group of soldiers)
(Other definitions for unit that I've seen before include "Single manufactured item; military grouping" , "army group" , "A single, complete item" , "A single self-contained item" , "Single undivided entity" .)