- Sobieski's greatest success came in 1683, with his victory at the Battle of Vienna, in joint command of Polish and German troops, against the invading Ottoman Turks under Kara Mustafa.
Upon reaching Vienna, with the Ottoman army close to breaching the walls, Sobieski ordered a full attack on 12 September. On early morning of that day, the united army of about 65,000–76,000 men (including 22,000-27,000 Poles) attacked a Turkish force of about 300,000–350,000 men. At about 5 pm, after observing the infantry battle from the Kahlenberg hilltop, Sobieski led the Polish husaria cavalry along with Austrians and Germans in a massive charge down the hillside. Soon, the Ottoman battle line was broken and the Ottoman forces scattered in disarray. At 5:30 pm, Sobieski entered the deserted tent of Kara Mustafa and the Battle of Vienna ended.