I just want to point out that the Sony Library accepts US military APO boxes for the credit card billing address. If there is some kind of GeoIP tracking, then apparently they don't use it when the billing address is an APO. (I most recently bought a book with my US APO address from Italy 4 days ago.)
However, I don't think most military have their credit card bills sent to their APOs in
Iraq, so that probably doesn't help the OP.. but I thought I'd mention it for any other military members abroad who might be reading the forum. (If the CC company will allow you to add your APO as a second billing address to your account, that would probably work.)
The OP would probably have better luck with Shortcovers. I am not able to use Shortcovers because they do not recognize a US military APO address as a US address
, but if the OP still has his credit card billed to one of the US states, then it should work for him.
Something else that would help the OP & other military members is the Overdrive ebook library.
This is the one for the Army- http://army.lib.overdrive.com. Go through AKO to check books out. They just recently started adding several epubs. I know the Air Force & the Navy have Overdrive too, but I'm not familiar with their sites.