What Union general — who played an important role at the Battle of Gettysburg — was known as “Old Snapping Turtle”?

What Union general — who played an important role at the Battle of Gettysburg — was known as “Old Snapping Turtle”?

George Meade
George McClellan
Ambrose Burnside
Philip Sheridan
Abner Doubleday

Correct Answer: George Meade