...with him, guard his flank, keep him informed of the enemy's movements, and collect all the supplies you can for the use of the army. One column of General Ewell's army will probably move toward the Susquehanna by the Emmittsburg route, another by Chambersburg. Accounts from him last night stated that there was no enemy west of Frederick. A cavalry force (about 100) guarded the Monocacy bridge, which wa...