Last nights episode made the important and deciding factor in the success of the Overland Campaign, the construction of the James River pontoon bridge by A company of the Engineer Battalion. To this date still the military's longest temporary bridge.
Its not easy to even find mention of what is basically the forming of what we have today. But here is one and the best of the ones I could find...
Company A, U.S. Engineer Battalion, June 1864: “…one of the most brilliant scenes of the war.”
LinkPhil