A ring of flowers from the war (6)
I believe the answer is:
wreath
'a ring of flowers' is the definition.
(I've seen this before)
'from the war' is the wordplay.
'from' is an anagram indicator (from the letters).
'the'+'war'='thewar'
'thewar' anagrammed gives 'WREATH'.
(Other definitions for wreath that I've seen before include "Circle of flowers or foliage" , "Circular garland" , "outdoor Christmas decoration" , "26 Down may be shaped into this decorative ring" , "A circle made of flowers and leaves" .)