Excellent army officer entertains soldiers making complaint (7)
I believe the answer is:
ailment
'complaint' is the definition.
('ailment' can be a synonym of 'complaint')
'excellent army officer entertains soldiers' is the wordplay.
'excellent' becomes 'ai'.
'army officer' becomes 'lt' (I've seen this in other clues).
'entertains' is an insertion indicator.
'soldiers' becomes 'men' (I've seen this before).
'lt' going around 'men' is 'lment'.
'ai'+'lment'='AILMENT'
'making' is the link.
(Other definitions for ailment that I've seen before include "problem" , "Slight but persistent illness" , "Tim Alen has an odd indisposition." , "Complaint, affliction" , "Malady" .)