Correct Answer :   Afghans and the Marathas

The Third Battle of Panipat took place on 14 January 1761, at Panipat, about 60 miles (95.5 km) north of Delhi between a northern expeditionary force of the Maratha Empire and a coalition of the King of Afghanistan, Ahmad Shah Durrani with two Indian Muslim allies—the Rohilla Afghans of the Doab, and Shuja-ud-Daula, the Nawab of Oudh. Militarily, the battle pitted the French-supplied artillery and cavalry of the Marathas against the heavy cavalry and mounted artillery(zamburak and jizail) of the Afghans and Rohillas led by Ahmad Shah Durrani and Najib-ud-Daulah, both ethnic Pashtuns (the former is also known as Ahmad Shah Abdali). The battle is considered one of the largest fought in the 18th century, and has perhaps the largest number of fatalities in a single day reported in a classic formation battle between two armies.