...erious opposition to throw two pontoon-bridges on the 11th, and his grand division passed over and massed on the level bottoms opposite Hamilton's Crossing, thus placing himself in front of Stonewall Jackson 's corps. The 11th and 12th were thus spent by the Federals in crossing the river and preparing for battle. Opposite Fredericksburg, the formation along the river-bank was such that the Federals...