Originally Posted by
vagabond
Thanks to all for this great information. I have yet to talk with a recruiter, but will carve out some time to do so.
What happens to people who are older than 39? Is that where the waiver comes in? What are you waiving? I guess the question really is whether there is an upper age limit, after which a person will never be considered. According to SaltyDog, the Navy will not take anyone older than 42.
I'm glad to hear about the easier physical requirements. I can run a mile, but it'll take me 40 minutes with several bathroom, water and milkshake stops.
I'd really like to fly the F-18 for someone.

You are asking the particular service to waive their age limit. If they need you this is a formality. If they are OK, then you must ask, and show why you are a benefit to the military with your expertise in law. The reason they have age limits is because the government fundamentally wants all servicemembers to have a theoretical opportunity to earn a retirement after 20 years of service (active or reserve duty). The reserve earns retirement starting at age 60 if they have 20 years service. My father in law was an MD who joined the Navy at 52 because they needed MD's. He ended service after 10 years.
Also, each service is different regarding waivers. Even the Navy likely allows reserve JAGs, just not today. Tomorrow may be different. Often is with the military. Thanks for considering helping out in the military regardless of direction.