This is just a partial list of the new features in Scourge of War: Gettysburg. Just something to whet your appetite!
Co-Op
Courier system for dispatches
Support for more than 2 players
Every Gettysburg engagement meticulously recreated
Multiple 'What If' scenarios
Every major personality researched and recreated by the AI
Replay from any commander of any engagement
4 Hi Res maps cover the entire battlefield in amazing detail
Weather, Battle Times, all historically brought to life
Devil's Den, McPherson's Ridge, Cemetery Hill, Culp's Hill, it's all in there!
Even the crops have been recreated from historical photographs and writings