...or, so long as the Confederate force that kept McDowell back was withheld from Richmond, McClellan was comparatively as strong in power to fight his enemy as if McDowell was with him, and Jackson and Ewell were confronting that soldier on the Chickahominy instead of on the Shenandoah or Rappahannock. The fact that McDowell could not then re-enforce him, imposed upon McClellan the obvious duty of acti...