An intriguing shot, no doubt that there will be some that say because the subject does not appear to be aware the shot is being taken it is not a 'pure' portrait, but in this instance I dont think it matters.
The real thing that will make this shot 'suffer' at the hands of voters is likely to be the blur in the lower fifth of the image (not sure whether this is another person who crept in shot or vignetting, but it is quite distracting from a very interesting subject
It could have been a nice environmental portrait, with all the whites and all. But the blurry OOF thing in front is very disturbing and ruins an otherwise fine pic.
I guess I just don't get it. The hat is made of paper with a sticker on it. How is he a soldier? Is it the Salvation Army? The context of the "environment" is missing.