Simple: just put only 2 us divisions within McDowell army, then march on Manassas.
Even if McDowell is inactive, US will win the battle with numerically inferior troops, because this force doesn't need more Command Point than McDowell has.
I guess Confederate army is suffering penalties for being too numerous than the Beauregard's CP points.
That would explain too why CSA Shenendoah army isn't joining Beauregard forces in Manassas...
Conclusion: there's something wrong here. Maybe in the initial deployment, maybe McDowell ratings... Or, more generally, in the balance between numbers, troops experience and command effects... or with penalties for inactive general ( I believe inactive general should be yet slower to move and more harshly punished for combat).
BUT this game is shining...a dream becoming true.
