Reasons for turnovers: Throw-away â The thrower misses his target and the disc falls to the ground. Drops â The receiver is not able to catch the disc. Blocks â A defender deflects the disc in mid flight, causing it to hit the ground. Interceptions â A defender catches a disc thrown by the offense.
Gettysburg (1863) was a turning point because it marked the highest point of Confederate power. It was General Lee's last invasion of the North, was the first indisputable defeat for the Confederacy, and saw the South take losses that, at that stage in the war, they could no longer afford.
Gettysburg was, by American Civil War standards, a massive battle. It's importance should not be downplayed. But it is also just a part of a larger mosaic of the war. There was great interest at the time in its outcome, but I doubt you'd find anyone in 1863 that would have called it a turning-point.