For a terrific collection of color plates of French military costume from the Gauls to 1806, visit The New York Public Library digital galleries.
Dark Ages
Uniforms of Russia 960 – 1900
The New York Public Library Images collection has an amazing collection of the uniforms of Russian armed forces from 960 – 1900. Most are in color. All are useful.
Flags for the Crusades
The Krigsspll.dk site offers a very large selection of downloadable flags for the Crusades. They are all very well done.
British Uniforms 1066 – 1900
The New York Public Library’s digital holdings have an amazing collection of color plates of British uniforms from 1066 – 1900. These are great painting guides.
Viking Battles In the Anglo Saxon Chronicles
Merlin Larson offers a list of battles with Vikings from the Anglo Saxon Chronicles. The most interesting thing he found was that – contrary to the mythology — the Vikings were not necessarily superior in battle to the Anglo Saxons.