American soldier right about outfit (3)
I believe the answer is:
rig
'outfit' is the definition.
(I know that outfit can be written as rig)
'american soldier right about' is the wordplay.
'american soldier' becomes 'gi' (informal term for a US soldier).
'right' becomes 'r' (common abbreviation).
'about' says the letters should be written in reverse.
'gi'+'r'='gir'
'gir' back-to-front is 'RIG'.
(Other definitions for rig that I've seen before include "engineer or > doctor" , "Apparatus; fix" , "Outfit; fix" , "Accoutre" , "Manage or control fraudulently, say an election" .)