Fort Sumter's Battle began when South Carolina forces attacked the Union garrison at Fort Sumter in Charleston harbor on April 12, 1861. After 34 hours of bombardment, the fort surrendered as it had become indefensible. No lives were lost in the battle, but it marked the start of the Civil War between the North and South. President Lincoln was conflicted on how to respond as he did not want to lose the South but felt obligated by the Constitution to maintain Federal sites like Fort Sumter. The North was outraged by the attack on the fort, signaling no further compromises between the divided sections were possible.