The Battle of Gettysburg took place in and around Gettysburg, Penn. Most historians view this battle as the moment in the U.S. Civil War when the tide turned irrevocably against the Confederate forces.
While the majority of the Civil War was fought on the territory of the Southern states, the Confederate Army made some bold moves to bring the battle into the loyal states of the Union. The second invasion began in the summer of 1863. Flush from a strong victory at Chancellorsville, the Confederate Army marched into Pennsylvania. Though not fully concentrated, the General Robert E. Lee, the commander of the southern forces, launched an attack at Gettysburg on July 1, 1863. The battle was bloody on both sides: Union forces suffered 23,000 casualties, while the Confederate forces lost 28,000 men, nearly a third of the entire invading army.