Who is Arun Khetarpal, inspiration for Agastya Nanda's 'Ikkis'?

Amitabh Bachchan’s grandson, Agastya Nanda, plays the role of Indian Army Second Lieutenant Arun Khetarpal in the film 'Ikkis'. Khetarpal, who played a pivotal role in the 1971 Indo-Pak War, was born on October 14, 1950, in Pune into a distinguished military family. He studied at the prestigious Lawrence School in Himachal's Sanawar before joining the NDA in 1967.