When General Meade, under orders of the President, took command of the army of the Potomac, on the twenty-eighth of June, it was mainly concentrated at Frederick, Maryland.
Lee's army was supposed to be advancing against Harrisburgh, which was garrisoned by raw militia, upon which little or no reliance could be placed.
Ewell's corps was on the west side of the Susquehanna, between that place and Columbia.
Longstreet's corps was near Chambersburgh, and Hill's corps between that place and Cashtown.
Stuart's cavalry was making a raid between Washington and Frederick, cutting Meade's line of supplies and capturing his trains.
Our force at Harper's Ferry at this time was supposed to be about eleven thousand.
It was incorrectly represented to General Meade to be destitute of provisions, and that he must immediately supply it, or order the abandonment of the place.
Accordingly, a few hours after.
he assumed the command, he assented to an order drawn up by an officer of General Ho