I remember Lee Marvin on a TV show, might of been Johnny Carson and he did say he had been awarded a bronze Star and told carson he got his ass shot off. he also was on This is Your Life program and said tghe same.
The story was about him getting the Navy Cross. Urban legend.
Except for the part about getting shot in the ass...
http://www.snopes.com/military/celebrities/leemarvin.asp