The Confederate army attacked Fort Sumter in Charleston, South Carolina on April 12, 1861, firing the first shots of the Civil War. Fort Sumter was a federal fort located in Confederate territory that the South wanted to take control of in order to cut off the North's supplies. President Lincoln had planned for the Confederates to fire first so that the Northern states would join the Union in response. The Confederate capture of Fort Sumter proved the South's power over its own territory and marked the beginning of the Civil War.