One angry about man’s German medal (4,5)
I believe the answer is:
iron cross
'german medal' is the definition.
(I know that Iron Cross is a type of german medal)
'one angry about man's' is the wordplay.
'one' becomes 'i' (Roman numeral).
'angry' becomes 'cross' (cross can mean annoyed or angry).
'about' says to put letters next to each other.
'man' becomes 'ron' (man's name).
'cross' after 'ron' is 'roncross'.
'i'+'roncross'='IRON CROSS'
(Other definitions for iron cross that I've seen before include "honour" , "German top military decoration" , "German wartime medal" , "German military decoration, pre-1945" , "German military medal" .)