Sid Meier's Gettysburg! is a real-time wargame that recreates one of the decisive battles of the American Civil War.  Players assume the role of either a Confederate or Union army commander.
Links to Historical Resources
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SID MEIER'S GETTYSBURG!
Screenshots  

Click a thumbnail for a larger image.
The battle for McPherson's Hill.
The main menu
Download the demo, V3 patch and Win 2000/XP update from Firaxis Games.
Buy the Osprey Men-at-Arms series from Amazon.co.uk
Buy the Osprey Campaign series from Amazon.com (U.S.)
Scenarios
Confederate Officer
Union Cavalryman
Pickett's Charge!
Federal Cavalry
Battle Line
My Favourite Games Homepage
Scenarios and Mods

Sid Meier's Gettysburg comes with a wide range of historical and randomised scenarios - and the official patch adds even more.  But there are also other scenarios available for download on the Web.  A good source of downloads is
The Angle @ Strategyplanet.com where you can get additional scenarios, alternative game art (uniforms and buildings) and a wide range of 'Battle Packs' - which are entirely new player-designed battlegames (including Chancellorsville, Chickamauga, Fredericksburg, Solferino and the Battle of the Widerness) that can be played using the S.M. Gettysburg! game engine.
The American Civil War Homepage

Eyewitness:  The Battle of Gettysburg, 1863


Gettysburg National Military Park
Buy 'Sid Meier's Gettysburg!' from Amazon.co.uk
The Gettysburg Online Society:  A fansite dedicated to Sid Meier's Gettysburg!
Buy 'Take Command: 2nd Manassas' from Amazon.co.uk
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