The Battle of Pittsburgh was a major battle of the American Theater of World War II between the United States and Confederate States. With the United States refusing to surrender after being cut in half, the Confederacy realized it was going to be incredibly difficult to defeat the United States in a long war, resulting in Army Group Longstreet being sent to capture the industrial American Midwest, particularly Pittsburgh. The Army Group, under Patton, began shelling the city and reached the outskirts in September. American Colonel George Price Hays and the 10th Division were the defenders of the city.
Patton hoped to encircle the city, but the Americans destroyed the bridges over the rivers, preventing Patton from doing so. Army Group Longstreet entered the city and engaged in ferocious urban fighting. The Americans held the high ground at the hills and Mount Washington, reigning artillery and gunfire down on the Confederates. Patton ordered his forces to charge up the hills to defeat the Americans, but "Patton's Charge" was soundly defeated, with over half of his force becoming casualties. The highest point Confederate soldiers reached is known as the "high-water mark" of the Confederacy.
American reinforcements were streaming into the city, and when news reached Patton that the Confederate forces in Washington were facing horrendous conditions because they were encircled, Patton elected to withdraw from the city. The last of the Confederate forces left as 1941 and the first year of war came to a close.