[reviewed/revised 29 Oct 2021]
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. Ten infantry brigades with good rifles, or nine plus a strong artillery battery, should do fine.
Run everybody east up the road and take positions in the woods to the NE and SE of the flag, as shown. This is a great example of the importance of establishing a good defensive position, if necessary by running—the late-arriving Federals will march up that slope again and again, getting slaughtered by the thousands and routing, because of the strength of that CSA position in the woods. 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.
J & P Rebalance Mod (1.27.4.3) BG
The same obvious strategy works here. Note that you can bring 12 brigades, but the Union forces have advanced weaponry and very effective artillery including counter-battery artillery. So consider bringing at least a couple of large melee cav units to reduce Federal artillery strength and/or cut off their ammo supplies.
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