WI Poland and Lithuania does better in the Great War against the Teutonic Order?
Precisely speaking, they sent outriders after the knights escaping from Grunwald, and the outrides do so well, they arrive in Malbork/Marienburg before Henry von Plauen, take the castle by surprise/deceit and lock themselves up withstanding von Plauen's attempts to take it back until the main allied army arrives and crushes the remaining TK forces. In the meantime Lithuanians defeat the reinforcements from Livonia. With no hope of help, all the remaining castles and cities surrender to Jagiełło (most of them did so OTL anyway). By the end of summer the entire Prussia is under the Polish and Lithuanian control. What now?
Precisely speaking, they sent outriders after the knights escaping from Grunwald, and the outrides do so well, they arrive in Malbork/Marienburg before Henry von Plauen, take the castle by surprise/deceit and lock themselves up withstanding von Plauen's attempts to take it back until the main allied army arrives and crushes the remaining TK forces. In the meantime Lithuanians defeat the reinforcements from Livonia. With no hope of help, all the remaining castles and cities surrender to Jagiełło (most of them did so OTL anyway). By the end of summer the entire Prussia is under the Polish and Lithuanian control. What now?