ON THE GENTLY ROLLING FARM LANDS surrounding the little town of Gettysburg, Pa., was fought one of the great decisive battles of American history. For 3days, from July 1 to 3, 1863, a gigantic struggle between 75,000 Confederates and 88,000 Union troops raged about the town and left 51,000 casualties in its wake. Heroic deeds were numerous on both sides, climaxed by the famed Confederate assault on July 3 which has become known throughout the world...