You might want to check out Ronna Penner's Nautical Mile kit. I used it to make layouts for my son who recently joined the Navy. They are not really official "Military" elements, but I liked the theme and the kit was great for me, since I'm new to this, and the purchased elements made it sooo much easier!
Here is the link to the two pages I made.
http://www.scrapbook-bytes.com/galle...0&ppuser=32872
Good Luck!