The Battle of Gettysburg was a major turning point in the American Civil War. General Robert E. Lee led 75,000 Confederate troops against 90,000 Union troops commanded by General George Meade near the town of Gettysburg, Pennsylvania in July 1863. Over three bloody days of fighting, the Union forces halted Lee's invasion of the North. The battle resulted in over 50,000 casualties and marked the end of Confederate aggression in the Civil War.