@Joe - I have this figure in the grey army and I'm inclined to agree with you. It's a lovely figure but I'm not 100% convinced by the helmet either (although I don't claim to be any sort of expert).
You get a choice of two heads, a Caucasian and an African-American, and test fitting the helmet on both it does appear to sit a little high on the head - more so on the Caucasian head I think. The shape looks to be slightly "off" as well, though as I say I'm not an expert and would also be interested to read what others think.
- Steve