I'm in Afghanistan need a way to sync books i bought on itunes onto my ipad.

I'm in Aghanistan and I bought a couple of books off of itunes from a MWR (morale, welfare and recreational) computer. I put the books on a thumb drive to take back to my personal computer in my room and then sync them to my ipad. Well as i went to sync it prompted me to authorize the books. I can't authorize the books I just bought because I do not have personal internet where I'm at. Now I've done the same thing with apps from itunes off the MWR computers and it's never given me a problem(that's actually how I got ibooks for my ipad). Is there a way to bypass the authorizing part when sycing the books onto my ipad? Or some type of loophole where I can alter the books to make it not ask me to authorize something I just purchased?