A cannon near the city of Vicksburg, Mississippi. During the American Civil War Vicksburg was an important river port for the confederates. Ulysses S. Grant laid siege to the city during the war which was a turning point in the conflict. Cannon Vicksburg Jigsaw Puzzle is great. Play and solve Cannon Vicksburg Puzzle with 12, 24, 35, 40, 54, 60, 70, 96, 104 or 260 pieces. This online jigsaw puzzle, is the perfect way to relax. Or create your own picture puzzles.