Camp 5, Princeton, May 3. Saturday. — The Forty-fifth Regiment had marched twenty miles through the rain to reach here, were very tired and straggled badly. They were regularly stampeded, panic-stricken, and routed. They report three killed in one party of stragglers. They had a cannon drawn by six horses, but our men “yelled so” and “fired so fast” that it was no place for cannon; so they wheeled it about and fled with it All queer! Company C killed eleven, Colonel Jenifer burned Rocky Gap (four houses) and continued his flight towards Wytheville. The Rebels report us two thousand cavalry and eight thousand infantry!! Got our tents today; got into a good camp overlooking the town.