The Battle of Salem Church occurs with no camp pause right after the Chancellorsville battle, but you can choose another corps (of 10 brigades/units) to use, so have one that is not in the Chancellorsville battle set up for this beforehand. Nine infantry brigades with good rifles and one strong artillery battery is a good mix.
Run everybody east up the road and take positions in the woods to the NE and SE of the flag, as shown. Keep at least one unit where it can run and cover the flag if a wide-flanking Union unit turns up.
This one should be an easy win, and once the Federals are weakened you can go around shattering every one of their units.