The Battle of Kars was the last major engagement of the Ottoman-Persian War. The battle resulted in the complete and utter destruction of the Ottoman army. It was also the last of the great military triumphs of Nader Shah. The battle was in fact fought over a period of ten days in which the first day saw the Ottomans routed from the field, followed by a series of subsequent blockades and pursuits until the final destruction of the Ottoman army. The severity of the defeat, in conjunction with another defeat near Mosul, ended any hopes of Ottoman victory and forced them to enter into negotiations with a significantly weaker position than they would otherwise have occupied.

Nader Shah Afshar was the founder of the Afsharid dynasty of Iran and one of the most powerful rulers in Iranian history, ruling as shah of Iran (Persia) from 1736 to 1747, when he was assassinated during a rebellion. He fought numerous campaigns throughout the Middle East, the Caucasus, Central Asia, and South Asia, such as the battles of Herat, Mihmandust, Murche-Khort, Kirkuk, Yeghevārd, Khyber Pass, Karnal, and Kars. Because of his military genius, some historians have described him as the Napoleon of Persia, the Sword of Persia, or the Second Alexander. Nader belonged to the Turkoman Afshars, one of the seven Qizilbash tribes that helped the Safavid dynasty establish their power in Iran.