Just finished round 2 of provs 20, 21, 22.
21: one LM (hellhound), one LR, three HM. No one has mentioned terrain, which is all-important. In this field the enemy movement is constricted by a large parallel hedge, open at both ends, trapping LM and LR in the middle. I agree with Darielle in principle but this arrangement allows for three frogs with an Archer top and bottom. All were 3*. I didn't lose any combatants.
22: three LM (1 hellhound, ancient orc and thief), one HR, one HM. Terrain was open with 3 islands. Hellhound was position1 so I centered 3 golems in pos. 1,2,3 with an Archer at 4 and a banshee at 5. I could have used a 3:2 golem:buddy combo but chose this for the fewer losses. Even so, it was a win but 1-1/2 squads of Golems were chewed up by the opposing Knight. Also lost 1/2 squad of Archers but Banshee was untouched.
23: two LM, one LR, one Priest, one HM. Each side had a 1/2 length parallel hedge constricting their 1,3 and 5 pos. and my 1 and 3 pos. I chose three HR at 1,2,3 and Archers at 4 and 5 so they could retreat into the corners to come out in the later battle. I chose an Orc Strat at pos. 1 to counter their LR and flanked with Golems. It was a win with 1-1/2 squads of Golems lost and a few OS.