...red an advance to drive him from his position; but, on the approach of my troops, he soon retreated across the railroad bridge, before we were in musket range. I here ordered the Macbeth artillery, Captain Boyce , to advance, occupy the work, and to open fire on the enemy across the river. This point, however, Captain Boyce found untenable, as the enemy's batteries swept the entire hill and work. He was c...