San Diego Interns on the flight deck of the USS Makin Island preparing for takeoff into a JAG career. The Navy JAG Corps offers summer internships and school year externships to law students wishing to gain valuable legal experience, the opportunity for academic credit, and greater insight into life as a Navy judge advocate. As a Navy JAG Corps intern/extern, you'll be assigned to a legal command/staff and gain experience in traditional Navy JAG Corps practice areas such as military justice (criminal prosecution and defense), legal assistance (providing general legal advice to Sailors and their families), and command services (advising military commanders and their staffs).