... because General Lee was not expecting it, and attack him before re-enforced by the troops detached to prevent his crossing at the lower point. The night of December 10, 1862, was a long one for Burnside . One hundred and forty-seven rifled cannon, 20-pound Parrotts, and 4-inch siege guns were distributed along Stafford Heights by Hunt, Burnside's able chief of artillery. The pontoons were placed ...