The things about Wisconsin we didn't learn in school, the American Folklore Theatre tells us with music, humor and poignance. For instance, the state hosted about 20,000 foreign prisoners of war during WWII, and most were German. Supervised POW projects ranged from Bayfield to Sturtevant, and some captured enemy combatants were even housed at State Fair Park. That is the context for "Victory Farm," this season's new American Folklore Theatre musical being staged outdoors in Peninsula State Park.