.... Field, Chaffin's Bluff. What is the character of the force advancing against your left? Concentrate the cavalry in that quarter and dispose your infantry to resist it. R. E. Lee, General. Headquarters army of Northern Virginia, 14th August, 1864. Major-General Wade Hampton, Charlottesville, Va.: Halt your command; return towards Richmond. Gregg's division is crossing at Deep Bottom. Send b...