The South has seceded and Fort Sumter has fallen. Armies have been raised on both sides. Lincoln is in the White House and determined to preserve the Republic. European powers have hastily declared neutrality. Washington D.C. is being threatened by confederate armies and needs to be guarded by federal troops. Modern warfare is being born. The importance of railways and waterways for the transport of men and supplies through a sparsely populated countryside where no food crops are planted will largely influence military decisions. The first conflict will take place at Manassas Junction in the first Battle of Bull Run.