Arier? Lol. It's a grown in period-correct haircut. I simulated two weeks of being in the field, which included no shaving for two weeks (luckily my facial hair growth is slow so it wasn't an overbearing two week beard), didn't touch up my hair after getting it cut two weeks before in a proper haircut, didn't shower for three days before the event (to simulate filth from the field)... The picture you see is a combination of these things and two days and a night in a forest with super hot temps. I was constantly sweating, doing pionier work, sentry detail, hiding in bushes, etc. I did the best I can to simulate the look and the result was perfect.