December 20th, 1864:
General Hardee has had his forces quietly construct a pontoon bridge across the Savannah River. They constructed it out any boat or pretty much any floating object they could use. On top of the boats, boards were placed to make a road. They then placed straw and hay on top of the bridge to dampen the noise of travelers. On the night of Dec. 20th, Confederate forces withdrew from Savannah and crossed the pontoon bridge into South Carolina.