A man in a army uniform is holding a picture with trees in it.
The military veteran had entered an art contest and won first place!
Not all army men are veterans. One cannot infer that he has entered a contest, nor that he has won first place.
Holding a picture does not mean that he participated in art contest and won first
A man wearing an army uniform may not be a veteran.  A picture does not always have to be in an art contest.  There is no basis to know that he won first, or any, place in the contest.