Which branch is the best to join for JAG?

I vote for the Air Force because of the diversity of opportunities for lawyers. Air Force has criminal law opportunities like all of the other services. The AF also has unique contracting opportunities because they contract for services such as "chow hall" and grass mowing, but also for complex aerospace weapons systems and cyber support. Several unified commands reside on AF bases, so support for contracting functions sometimes falls to the local JAG or the JAG office may be shared between the unified command and its Air Component. The Air Force also has lawyers who specialize in freedom of navigation and international aviation law. Finally, the Air Force has a wide range of installations in the CONUS and overseas that generally don't suck as bad as the other Services; also, fewer uniforms leading to reduced expense.

Most responses will be "go home to Mama" based on experience in a single service. The services generally practice the same categories of law which tend to gravitate to personnel (people screwing up, HR, and union stuff) and contracting. The differences really comprise a small fraction of the overall workload. Navy has all sorts of Admiralty Law issues. AF deals with a lot of international aviation issues as does the Navy. Army is huge into civil works in which major projects like dams, waterways, dikes, etc. are stuff the other services don't play in. Army and Navy do the AF construction management for the most part so AF contracting law centers around service contracts vs. construction. A junior JAG will be told what job they are going to do. You want to gain experience in all facets as time goes on in addition to any other pedigree items your designator path demands. Bottom line, go for the work first, locations second. If you're bright, of good character, hard charging, and committed to serving, you can't go wrong with any of the services. It's what you make of it.

2LT Christian Mays Sir, You are in the Army Reserve now, so I would stay in the Army, unless this was just a general question. Below is information that might help.

https://www.quora.com/If-one-wanted-to-be-a-Judge-Advocate-which-branch-of-the-US-military-would-be-the-best-to-join