US soldier welcoming a coarse Italian patriot (9)
I believe the answer is:
garibaldi
'italian patriot' is the definition.
(I've seen this before)
'us soldier welcoming a coarse' is the wordplay.
'us soldier' becomes 'GI' (GI can mean an American soldier).
'welcoming' means one lot of letters goes inside another (in sense of 'inviting in').
'coarse' becomes 'ribald' (both can mean vulgar).
'a'+'ribald'='aribald'
'gi' enclosing 'aribald' is 'GARIBALDI'.
(Other definitions for garibaldi that I've seen before include "Revolutionary leader" , "girl's blouse!" , "leader of nationalists" , "Famous Italian" , ""Squashed fly" biscuit?" .)