The Battle of Vienna took place on September 12, 1683. The far bigger Ottoman Empire's forces were defeated by the Christian troops of the Holy Roman Empire and the Polish-Lithuanian Commonwealth, led by Poland's King John III Sobieski. King John III Sobieski had visited the Shrine of Our Lady of Czestochowa before this battle, entrusting his forces to the protection of the Blessed Virgin Mary. Her intercession was credited with the triumph, and in 1684 Pope Innocent XI added the feast of the Holy Name of the Blessed Virgin Mary to the Church's calendar.