What can be done, with a POD of 1642, to have a Royalist Victory in the English Civil War? I am no expert or anything, but I do recall their odds were better early on before losing a major general in an important battle. I do know it works better is Oliver Cromwell or any other important leader on the Roundhead side dies in battle or even is seriously wounded. Said victory can be any kind of condition that allows Charles I to remain on the throne, even if it barely a victory.