Aim to capture, also, the soldiers (7)
I believe the answer is:
platoon
'the soldiers' is the definition.
(group of soldiers)
'aim to capture also' is the wordplay.
'aim' becomes 'plan' (I've seen this before).
'to capture' indicates putting letters inside.
'also' becomes 'too' (synonyms).
'plan' going around 'too' is 'PLATOON'.
(Other definitions for platoon that I've seen before include "part of company" , "Group of soldiers" , "Group under lieutenant" , "Military squad" , "Subdivision of a company" .)