unless things have changed since 2003, if he's an E4 or under, he'll have the opportunity to go to alcohol rehab and if he successfully completes the program, he will complete his enlistment...if he fails, he'll be discharged immediately upon return to his unit....with a General under OTH conditions...E5may, or may not be given the opportunity for rehab, depends on the CO; SNCO's IMMEDIATELY get the boot.....