British soldiers capturing East German city (6)
I believe the answer is:
bremen
'german city' is the definition.
(I've seen this before)
'british soldiers capturing east' is the wordplay.
'british' becomes 'br'.
'soldiers' becomes 'men' (I've seen this before).
'capturing' means one lot of letters goes inside another.
'east' becomes 'e' (synonyms).
'br'+'men'='brmen'
'brmen' enclosing 'e' is 'BREMEN'.
(Other definitions for bremen that I've seen before include "North German city on the Weser" , "City and state of NW Germany" , "German port city and state" , "Major German port" , "City and state of northwest Germany" .)