The battle of Vienna began on July 14, 1683, when the battle of Vienna broke out on July 14, 1683, when the battle of Vienna broke out, and the Ottoman Turkish Prime Minister Mustafa led an army of 175,000 men, who were less equipped, began the siege of Vienna since September, when the Holy Roman Emperor Leopold I of Poland led the army of the Holy Roman Emperor Sobieski and thus defeated the army of the Ottoman Emperor Leopold I of Vienna. This large-scale war was led by the Polish Count John III's expanded army of 18,000 Polish-Austrian and German commanders, and won the battle between them, and the Three-Months of the Ottoman Empire, which had a majority of the troops of the Ottoman