Was the union martyr or menace?

The union was a martyr

The Battle of Gettysburg broke the forward momentum of Lee's invasion of the North in an extremely bloody battle eventually forcing them to retreat back towards the South. They didn't surrender immediately as the war would rage for at least two more years, ending in 1865. Lee was also a strong general and a smart tactician who wasn't the type to refuse to retreat when the odds were stacked against him. His army withdrew back to the South after the battle. But it would be the last time that the South would march on Union soil in a major invasion.