Girl returning from warfare is saluted (6)
I believe the answer is:
lassie
'girl' is the definition.
(lassie is a kind of girl)
'returning from warfare is saluted' is the wordplay.
'returning' is a reversal indicator.
'from' says the answer is hidden in the clue.
'eissal' is hidden in the letters of 'warfare is saluted'.
'eissal' written backwards gives 'LASSIE'.
(Other definitions for lassie that I've seen before include "Girl from Scotland and dog from film" , "Movie role for several dog stars" , "Collie featuring in many films" , "Screen mutt - Scottish girl" , "Cinema dog who went home" .)