Is this the practice area you are looking for?

A Military Lawyer manages legal cases for individuals in all branches of the U.S. military, including, but not limited to, members of the Army, Navy, Air Force, Marines, and Coast Guard. Some common cases that require the assistance of a Military Lawyer include court-martials, issues related to discharge, conviction appeals, acquiring and making changes to military records, refuting a reprimand, and issues related to desertion, among other things.

All branches of the United States military follow their own legal system, the Uniform Code of Military Justice (UCMJ.) A military lawyer will possess extension knowledge of the UCMJ, and will be able to advise you on any cases involving a breach of its regulations.