My friend is in the army now wants out how can he get out

Committing oneself to military service is not something to do without considerable thought.

Section D and block 13a (http://usmilitary.about.com/od/joiningthemilitary/l/blcontract.htm) of the enlistment contract states:

"I certify that I have carefully read this document. ANY questions that I had were explained to my satisfaction. I fully understand that only those agreements in section B of this document or recorded on the attached annex(es) will be honored. ANY OTHER promises or guarantees made to me by anyone are written below."

Getting Out of the Military (http://usmilitary.about.com/cs/generalinfo/a/getout.htm)

If nothing else, this will provide good reading material.

Almost all of my friends are in the military, and a few want to get out. He could go AWOL, but I don't by ANY MEANS suggest that.

Normally it is not a job you quit, He may want to have and disuss his options with a military attorney