A battle between the Teutonic Order and the Lithuanians.
In early April 1311 the Lithuanian grand duke Vytenis raided Prussia. The Lithuanians plundered Warmia (Ermland) and withdrew, laden with loot and prisoners. Grand Commander Heinrich von Plotzke (1309-1312) followed the retreating Lithuanians. The armies met on the Wednesday before Easter (7 April 1311) at a place called Woplauken (mod. Woptawki, Poland). The chronicler Peter von Dusburg mistakenly rendered the date as 6 April. Initially the Lithuanians were able to hold out behind wooden barriers, but discouraged by a general assault of the order’s full forces, they fled and were pursued by the order’s troops. According to the order’s chroniclers, most of the Lithuanians were killed. The grand duke, however, escaped. The incident represents one of the few great pitched battles between the order and the Lithuanians. In memory of their victory, the Teutonic Knights founded a Benedictine nunnery at Thorn (mod. Torun, Poland), which illustrates the importance of the battle for the order.