American Civil War, four-year war (1861–65) fought between the United States and 11 Southern states that seceded to form the Confederate States of America. Discord Link: has been in a frustrating and isolated position in the world since the Weltkrieg. The eastern front goes quiet in a stalemate. Project: Alpha is a mod in which a map is approximately 3 times larger than the normal map. If there was no American intervention in the Weltkrieg, then that would have been the last major war excepting the Russian Civil and Boxer Rebellion.