...turns, under Halleck's supreme command; while in Tennessee, Bragg, who had outmarched and outmanoeuvred Buell, reaching Chattanooga first, though starting last, was now racing with the same rival for Louisville and the Ohio. The North was thus threatened with invasion in Maryland and in Ohio at the same time. Every man that it was thought possible to take from Grant, had been sent to Buell, and the form...