Does the UCMJ apply after you leave the military?

[Gfactor]

[QUOTE=friedo]
I was under the impression that the discharge did not occur until after the sentence had ended.
[/QUOTE]

Apparently that’s not always the case. This JAG report discusses some cases involving discharged prisoners:

one of which involves a service-member who was discharged before his court-martial and who was on terminal leave when apprehended, are currently before the 10th Circuit Court of Appeals. The appellate court should definitively decide the applicability of Feres to post-discharge military prisoners soon. These decisions will have broad ramifications for the USDB and all RCFs.

http://www.armfor.uscourts.gov/annual/FY00/FY00ArmyReport.pdf