...Army of the Potomac. So Major-General Pleasanton, on the 26th of February, sent confidential orders to Kilpatrick, directing him to increase his command to 4000 picked men, to take with him Colonel Ulric Dahlgren and his regiment, and to proceed by such routes and to make such disposition as from time to time he might find necessary for the accomplishment of the object of the expedition. Thus was formed one...