Military City. Information on tanks, weapons and aircraft.
Soviet Military Arms and Equipment.
USMC Aircraft, Vehicles and Equipment.
Military Industry. Information on MBT, Air Support units, Anti-armour missles, and AD systems.
Rene's hot armour page. Has some good pictures of modern and WWII tanks.
Israel Defense Forces
The best organized Navy SeALs page I've been able to find.
A complete listing of Special Forces Units of countries throughout the world
Some information on the U.S. Rangers.
Tom Hunter's Unofficial Special Operations.
A decent guide to the objectives, and sometimes current locations of Special Warfare forces.