vagabond,
The military reserves are often interested in certain professionals like MD's, Nurses, and potentially Judge Advocate General (JAG) Atty's. Often, the age is not the same as your warfighting skillsets (even though you can end up anywhere the military is deployed).
The Army says "JAG Corps officers prosecute, defend, and judge, courts-martial, negotiate and review government contracts, act as counsel at
administrative hearings, and provide legal advice in such specialized areas as international, regulatory, labor, patent, and tax law, while effectively maintaining their civilian careers."
Army: IN GENERAL, APPLICANTS MUST MEET THE FOLLOWING QUALIFICATIONS:
1. Be at least 21 years old and for appointment as a first lieutenant be younger than 33, and for appointment to captain be younger than 39 (waivers for those exceeding age limitations are available in exceptional cases). http://www.goarmy.com/jag/procres.pdf

The Navy does not take JAG officers in the Reserves without first being on Active duty. They take JAG officers up to 42 years old though. http://www.navyreserve.com/opportuni...icer/legal.jsp

Not sure of USAF/Air NAtional Guard nage requirements though they have reserve JAG's. There websites don't open for me either, but it might be because the internet knows I am a squid. <g>]

Good luck