PREORDER GMT Games - Clash of Giants Civil WarClash of Giants: Civil War takes the game system from Ted S. Raicers popular and critically acclaimed Clash of Giants WWI series to two of the storied battles of the American Civil War: Second Bull Run and Gettysburg. CoG: Civil War uses a modified version of the chit pull Activation system of Clash of Giants II: Campaigns of Galicia and First Ypres 1914 while retaining the CoG combat system. Every (mostly brigade level) unit has a Tactical Efficiency