The Battle of Sedgemoor, 6th July 1685, was the last battle ever to be fought on English soil, part of the battle field was the back garden of my childhood home (where my parents still live) and my ancestors fought in it (or at least we have now collected enough circumstantial evidence to say that they did). You probably haven't heard of it, but you may have heard of the Monmouth Rebellion and if you know anything about the history of the period you will have heard of Judge Jeffreys and the Bloody Assizes, which was the aftermath of the battle.
I would be on the side of the Duke of Monmouth, because I would be a peasant, and that is where I would fight. And I would tell them to take a different route to the battle field when they tried to start their surprise attack so that (a) they weren't tired after travelling through the marshes and (b) they didn't come across a Royalist scouting party, which gave the game away and sealed their fate.
Not a battle many have heard of, which I've never understood, but there we go.