This website has military pay scales and the additional allowances given for certain conditions http://www.militarytimes.com/money/pay_charts/?gclid=CLX20YGnspECFSFaagodbXM0fw

I'm not familiar with all of it but it starts with basic pay and then there's clothing allowance, housing allowance, imminent danger pay, hardship duty pay, COLA, housing, and so on. Somebody that has actually been to Iraq lately could tell us which of these a regular GI actually qualifies for.