Here is a nice high level resource for a summary of where and when battles were fought and the resulting casualties. The time window is fully adjustable and mousing over a circle shows more detailed battle information.
Battle & Casualties Map
-Jim
Interactive Battles & Casualties Map
Interactive Battles & Casualties Map
"My God, if we've not got a cool brain and a big one too, to manage this affair, the nation is ruined forever." Unknown private, 14th Vermont, 2 July 1863
Re: Interactive Battles & Casualties Map
Thank you. That's very interesting and informative.