Kazimierz Jan Sapieha

Kazimierz Jan Paweł Sapieha (Lithuanian: Jonas Kazimieras Sapiega jaunesnysis; 1637–1720) was a grand hetman of Lithuania commencing in 1682.

He commanded the Grand Ducal Lithuanian Army contingent of the military of the Polish–Lithuanian Commonwealth during the campaign to lift the Siege of Vienna by the Ottoman Turks.

When the main Polish Army under the King of Poland John III Sobieski, who was nominated the Supreme Commander of the Holy League, marched on Vienna and played a decisive role in the battle, it left Poland undefended.

As a result, the Lithuanian troops were drawn into a fight along the southern Polish border tying down the anti-Habsburg Hungarian Kuruc forces under the vassal king of Upper Hungary, Emeric Thököly, along the border between Upper Hungary and Poland.

This punitive action on the edge of the overall campaign was successful in keeping these irregular Hungarian troops (bolstered with Ottoman levies) from either raiding into Poland or coming to the assistance of the besieging Ottoman Army when the Holy League attacked their positions outside Vienna on 12 September 1683.