Is warfare all over for him? (7)
I believe the answer is:
general
'is warfare all over for him?' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.
'him?' is the wordplay.
I cannot really see how this works, but
'him?' could be 'gene' and 'gene' is located in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for general that I've seen before include "Leader" , "Not particular or specific" , "Not specialised or limited" , "position" , "Military commander" .)