Here's the best website for military campground:
U.S. Military Campgrounds and RV Parks - Home
Note when you get there, click "Military Facilities Info". Don't scroll down and it will go to a page state by state. Are they good...some are great, some are average, and some of them are passable.
here's the one's I've stayed at that were great:
Dams Neck NAS - Virginia Beach Charleston Joint Base
Sea Mist - Camp Lejune (Onslow Beach) Osprey Cove - Mayport NAS, Jacksonville FL
Ellsworth AFB - for the Black Hills SD area McConnell AFB - Wichita KS
Kirkland AFB - Albaquerque NM Florida panhandle bases and NAS - all OK
Gulfport NAS (SeaBee Museum) New Orleans Joint Reserve Base
Ft Belvoir - Nice but expensive
Air Force Academy - best golf in DOD for $22 walking
Planned this summer:
Fiddler's Cove - San Diego Travis AFB CA
Boise ID Mountain Home
Whidbey NAS - Olympic Peninsula WA
As a general statement, I've found the NAS more appealing and moderately priced, except CA where higher priced.You'd be best served to get a windshield sticker for your vehicles from someplace that still issues as some bases still require (NASs).