The event that marked the turning point of the Civil War was The Battle of Gettysburg.

Fought between July 1 and July 3, 1863, this pivotal battle ended in a major defeat for the Confederate Army under General Robert E. Lee. The Union forces, led by General George Meade, successfully halted Lee's invasion of the North, boosting morale in the North. Alongside the Union's concurrent triumph at the Siege of Vicksburg, the victory at Gettysburg changed the tide of the war, setting the stage for a series of Union successes in the campaigns that followed.