Welcome to the board, SG777, we have several military retirees here and a few with disability ratings.
When the novelty of reading these threads wears thin, I recommend a copy of Ernie Zelinski's "How to Retire Happy, Wild, & Free", especially his "Get-A-Life Tree" for activities/interests brainstorming.
You're probably far ahead of the rest of us on the military medical aspects, but you may want to try these as well:
http://www.early-retirement.org/foru...aqs-30645.html
http://www.early-retirement.org/foru...day-30655.html
http://www.early-retirement.org/foru...ist-46732.html
http://www.early-retirement.org/foru...ent-38338.html
My next suggestion would be swimming or some other water activity, but I'm not sure that you're in exactly the world's best location for that...