...t brigades with vigor, but was twice repulsed. The Union loss was very heavy. Hancock, finding the enemy repulsed and the woods on fire in the rear of his line, crossed to the north side of the Po River . One gun, the first ever lost by the Second Corps, was jammed between two trees in the midst of this fire, and was abandoned by Birney's men. Many of our wounded perished in the flames. Of this b...