York GAR post was named for slain U.S. general, and apparent pachyderm, John Sedgwick

(Cannonball) Major General John Sedgwick was one of the highest ranking officers in the Union Army to lose his life during the Civil War. He commanded the Sixth Corps of the Army of the Potomac for much of the war until perishing at the Battle of Spotsylvania Court House on May 9, 1864, when a Confederate sharpshooter shot him in the head from across the lines.
Sedgwick, when warned of the danger only moments before and observing his men ducking when they heard rifle fire, reportedly sneered, "What? Men dodging this way for single bullets? What will you do when they open fire along the whole line? I am ashamed of you. They couldn't hit an elephant at this distance." Continued