Chamberlain's Charge is considered by many to be the turning point of the Civil War. The skirmish occurred on July 2, 1863 during the Battle of Gettysburg in the area known as Little Round Top. The Twentieth Regiment of Maine volunteers prevented the Confederates from flanking the Union army and attacking from the rear. Artist: Mort Kunstler. 1000 Piece Jigsaw Puzzle. Finished size 24 X 30.