Ironsides Fan site about the equipment and weapons used by the armed forces of the US, UK, Canada, and Australia, with links to agencies and other related sites.
Armament Technology Provides links to coverage of topics including missiles, weapons, ammunition, rockets, warplanes, military aviation, simulation, tutorials, propulsion systems and electronic warfare
Secret Weapon Offers information about weapons of modern war. Lists new and future weapons that are coming to the battle field.
CNN.com Specials Photos and brief characteristics of aircraft, munitions, ground weapons, warships, and weapons of mass destruction as related to the U.S.-Iraq war.
Ships of the World (English Edition) Japanese monthly magazine covering warships, merchant vessels, ship building, maritime events, and history.
Military Factory Reference site detailing specification on military weapons from World War II to the modern era.
Trackpads Military Gallery A military community site featuring a large gallery with photos of land vehicles, aircraft, ships, submarines.
ArmsWorld (EnemyForces) Information on modern military armament and equipment, including photos and detailed descriptions.
Defense Update Bi-monthly magazine covering modern defense and technology, with articles and reviews on new products and programs.
Military.cz Includes information about U.S., British and Russian weapons, aircraft, ships, tanks, fighters, and military technology. Also has photos and videos.
Wikipedia: Weapons Encyclopedia article. History of weapons through the ages.