The Namka Chu valley was the scene of some of the most fierce fighting during the 1962 Sino-Indian war.
The battle of Namka Chu began on 10 October 1962 and continued until 16 November of the same year.
[2] It concluded with the total destruction of 7 Brigade of the Indian Army and the capture of Dalvi, who was repatriated in 1963.
His book Himalayan Blunder is a detailed analysis of the prelude and conduct of the battle from the Indian point of view.
The Indian defeat at the Nam Ka Chu was the first in the India-China border war of 1962, which ended with a unilateral Chinese ceasefire and withdrawal after China had captured almost the entire disputed territory of NEFA (now Arunachal Pradesh).