Fight the Battle of Gettysburg as Robert E. Lee commanding the Army of Northern Virginia, or as George G. Meade commanding the Army of the Potomac in an ultra-realistic, historically accurate real time strategy game. Gettysburg includes a real GIS capability map including terrain data. The game engine's artificial intelligence includes ultra-realistic tactics that take into account the opposing unit's position, active troops, overall strength, fatigue, supply, morale, and the unit commander's command and control abilities, and will play a historically accurate opposition. Will your tactics and strategy on the battlefield alter the outcome of the battle? Can the Army of Northern Virginia prevail? Gettysburg, available for Windows, Macintosh, and Linux computers.