Shawkhan2 and Rmarsden have it right. After experimenting many more times I have been able to get big and relatively easy wins by diverting the 4 Imperial Veteran Tercios on the left flank with cavalry (the old "Look at the pretty ponies" tactic) while shifting my entire army to the right ...

Extremely helpful posts, thank you! I have lost Lutter five times in a row these past two days and was tearing my hair out, and then I wondered if somewhere out there were similar 17th century battlefield obsessives encountering the same problems. There were! The closest I came to winning was with t...