The United States Military Academy, West Point, has posted more than a thousand military campaign maps used in their course "History of the Military Art". These are organized into Atlases, such as the Korean War and the Chinese Civil War.
"Inside the crates were maps, thousands of them. In the top right corner of each one, printed in red, was the Russian word секрет. Secret" -- Inside the Secret World of Russia’s Cold War Mapmakers by Greg Miller, WIRED
The Civil War Trust's animated maps provides viewers with a bird's eye view of American Civil War battles.
CNN.com's 'Home and Away' initiative honors the lives of U.S. and coalition troops who have died in Iraq and Afghanistan. The extensive data visualization project tells the story of where and how the lives of these troops began and ended. The project is a sobering look at the human cost of two wars in the Middle East, and as such is restrained with a sober palette of blacks, whites and greys. [via] [more inside]
Matthew White's Historical Atlas of the 20th Century. One of those amazing internet reference sites created by some guy (okay, Matthew White). Lots of fascinating, incredibly researched stuff: complete lists of all manmade megadeaths in the 20th century, the 100 most important works of art of the 20th century, maps showing changes in the types of government by decade, comments on Wikipedia, and much more. Also, some fun stuff, like what the US would look like if every secessionist movement succeeded. Previously posted in 2001, but much updated and worth a second look
Civil War Richmond: an online research project designed to collect documents, photographs, and maps pertaining to Richmond, Virginia, during the Civil War.
Civil War Maps The Library of Congress just published an online collection of approximately 2,240 Civil War maps, with information about the collection and a History of Mapping the Civil War.
World At War A map, list of current and past conflicts with detailed insight.