Emperor Nader Shah, the Shah of Iran (1736–1747) and the founder of the Afsharid dynasty, invaded Northern India, eventually attacking Delhi in March 1739. His army had easily defeated the Mughals at the Battle of Karnal and would eventually capture the Mughal capital in the aftermath of the battle.

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.