[220]
It will also be observed that General Stuart was not permitted to make this movement around the enemy's rear unless he could pass around the Federal army without hindrance, and there was the same conditions annexed to the order of General Stuart, as I have shown. In any case, General Stuart, after crossing the Potomac, was to put himself on the right flank of General Ewell, and that any movement on the part of the former which tended to prevent this was entirely inconsistent with General Lee's reiterated instructions.
So, that, under this instruction, General Stuart was practically instructed not to cross the Potomac east of the Federal army, and thus interpose that army between himself and the right of General Ewell.
There were places where the Potomac could be crossed between the enemy's army, at or near Edward's Ferry, and the Blue Ridge, east of the latter, and General Stuart had discretion to use the fords east of the Blue Ridge, but he had no discretion to use any ford that would place the enemy's army between him and the troops of General Ewell.