Buying land while over seas?

I am working in Iraq(civilian) I have found land in the states that I want badly! Is there anyway to purchase it while I'm here so that I dose'nt sell before I return? Is there any other fees when buying land other than the sale price? People say you have to pay to get the land apraised is this true? If there are other things needing to be done, can I buy now and have them done later?