ENLISTMENT AND DIVORCE?

I'm a permanent resident (2 years green card-conditional).My wife and i was not in good terms right now. I want to join in the military but she won't give me some requirements that i need, because i'm still married to her i need her SS card, birth certificate, and our marriage contract to file for dependent's.My first question, is there anyway i can join even she won't give me those requirements? My second question, If i divorce her am i still allowed to join?(My green card is based on our marriage coz she petitioned me).By the way she's never been home for several months now and didn't bother to call me either.I don't know what to do....