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In OTL, McClellan was relieved of command of the Army of the Potomac on the seventh of November, 1862.
This was a poor decision, in my view, because at that time McClellan had just achieved an important strategic coup and was poised to take advantage of it - while the switch from McClellan to Burnside gave the Confederates weeks to reorganize their army.

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McClellan had effectively split Lee's army in two and gotten between them. In OTL it took until the end of November for Jackson to reunite with Longstreet - there was definitely an exploitable window there.

So, what do we think would happen if McClellan - with about a 3:1 superiority in numbers by what's on the map - took on Longstreet? I see no problem in assuming Longstreet would be defeated, and at that point there's actually very little between McClellan and Richmond. Jackson would be compelled to move south as fast as possible to defend Richmond, along with whatever was left of Longstreet's force, and either way McClellan definitely has the initiative.

Would such a success have prevented McClellan's relief? OTL the justification for firing him was that he'd uncovered Washington, but with Jackson running south and Longstreet pushed back that would be even less true than OTL.
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