The battle known as the turning point of the American Civil War is the Battle of Gettysburg, fought from July 1 to July 3, 1863. This significant engagement, involving Union and Confederate forces, resulted in a decisive victory for the Union army, inhibiting General Robert E. Lee's invasion of the North. The defeat marked a shift in momentum for the Union and led to increased support for the war effort. Gettysburg also set the stage for President Lincoln's iconic Gettysburg Address, reinforcing the principles of liberty and equality.