The battle of Kurukshetra took place at Kurukshetra, Haryana, India, just about 150 air kilometers north of New Delhi, on the way to Chandigarh.

It took place roughly 5000 years ago and in 730711BG.Lon (Bhagavad-gita class of July 11th 1973 in London) and in other passages, Srila Prabhupada says:”sixty-four crores of men were killed on the Battlefield of Kuruksetra.”

64 crores mean 640 million

640 million represents about 8.20 % of the current world population in 2020 figures.

According to https://www.worldometers.info/world-population/, the current world population is 7.8 billion and increasing fast. (again 2020 figures)

“Men” also means only male soldiers, generals, princes and kings from the whole world. The world’s administrative centre was Hastinapura, the current New Delhi. No women or children were involved in the killing, as the population was much more pious and did not have to suffer in wars the reactions for their sinful activities.

The Bhagavad-gita was spoken by Sri Krishna, the Supreme Personality of Godhead, personally present on the battlefield, to Arjuna and the rest of the world just before the battle. It was spoken in half an hour, at the most one hour and is meant for everyone.

“It appears that the talks between the master and the disciple were exchanged openly in the presence of both armies so that all of them were benefitted. The talks of Bhagavad-gita therefore, are not specifically directed at any particular person, society or community, but they are for all, including friends or enemies.” Bhagavad-Gita 2.10. Version 3.