Informed about enemy returning after a battle (5,2)
I believe the answer is:
aware of
'informed' is the definition.
(thesaurus)
'enemy returning after a battle' is the wordplay.
'enemy' becomes 'foe' (I've seen this before).
'returning' says the letters should be written in reverse.
'after' says to put letters next to each other.
'battle' becomes 'war' (I've seen this before**).
'foe' backwards is 'eof'.
'a'+'war'='awar'
'eof' put after 'awar' is 'AWARE OF'.
'about' acts as a link.
(Another definition for aware of that I've seen is " Informed (about something)".)