All About Medieval Castles - Medieval Siege Weapons
Provides very high quality information on medieval castles, siege weapons, and castle warfare in general. Also includes interesting articles on medieval aspects of D&D and Lord of the Rings.
http://www.medieval-castle-siege-weapons.com

Castles of the Middle Ages
Contains information about castles and the way they were defended.
http://www.medieval-castles.org

Famous Black Inventors
Profiles selected African-American inventors throughout history and provides links to various inventing-related resources.
http://www.black-inventor.com/

Today in Canadian History
Find out what happened on this day in Canadian Military History
http://www.warmuseum.ca/cwm/tih/tih_e.html

World War 1 Naval Combat
Great War Naval history including the Battle of Jutland, Dogger Bank, Heligoland Bight, Coronel and the Falklands, the scuttling of the German Fleet at Scapa Flow and warships sunk.
http://www.worldwar1.co.uk/