Chap involved in noted war drama (6)
I believe the answer is:
Here is my best explanation:
'chap' is the definition.
(I've seen this before)
'involved in noted war drama' is the subsidiary indication.
'involved in' indicates a hidden word.
'edward' can be found hidden inside 'noted war drama'.
(Other definitions for edward that I've seen before include "King who abdicated", "The Black Prince's name", "Male name", "Christian name of Enigma Variations composer", "Mans name", "-- The Confessor", "-- Lear; -- Heath", "Name Lambert Simnel took when crowned", "First name of Mr Rochester (Jane Eyre)" and "Boy".)