This tour will cover the largest Union counterattack of the entire battle of Gettysburg. The fighting on the Union left flank is becoming desperate, John Caldwell and his division are sent to rescue the situation, the battle hangs in the balance.  This will be an easy 1 and 1/2 mile walk on mostly flat terrain. The tour will start at Caldwell's Divisional Tablet on Hancock Avenue, just south of the Pennsylvania Monument and north of the New York Auxiliary Monument.