Group of soldiers ordered to store kit (7)
I believe the answer is:
brigade
'group of soldiers' is the definition.
(type of military unit)
'ordered to store kit' is the wordplay.
'ordered' becomes 'bade' (past tense of 'bid' as in to order).
'to store' indicates putting letters inside.
'kit' becomes 'rig' (I've seen this in other clues).
'bade' placed around 'rig' is 'BRIGADE'.
(Other definitions for brigade that I've seen before include "Military group" , "Body of troops" , "Rig a bed (anag)" , "Set of troops" , "Soldiers" .)