Wenceslas IV of Bohemia signed a defensive treaty with the Poles against the Teutonic Order; his brother, Sigismund of Luxembourg, allied himself with the Order and declared war against Poland on 12 July, though his Hungarian vassals refused his call to arms.
Venceslau IV de Bohemia asinou un tratado defensivo cos polacos contra a Orde; o seu irmán, Sexismundo de Luxemburgo, pola contra, aliouse coa Orde e declarou a guerra a Polonia o 12 de xullo, aínda que os seus vasalos húngaros se negaron a participar nela.