India China did have a war in 1967, which was fought in 2 locations. The war composed of two battles, in Nathu La and Cho La both in the eastern theater. Unlike 1962, the Chinese did not open a front in the Northern area (Ladakh/Aksai Chin). This was mainly because in the 1962 war the PLA did not make any major advances in the North like they did in the Eastern theater.

The two incidents were at Nathu La and Cho La and stemmed from Chinese maneuvers to take control of Sikkim. Thinking that the defenses India had were as weak as they were in 1962, the Chinese mobilized forces. However, the Indian forces took preemptive action and started to demark the boundary using barbed wire. This was stopped by the Chinese, and after some time they started a full surprise assault backed by MMG and artillery fire. However, since the Indians occupied the heights, Chinese bunkers were completely annihilated by highly accurate Indian artillery fire over the course of 3 days. The Chinese were forced to withdraw and evacuate all their aggressive positions.

The 1967 war was a decisive Indian victory, and was the catalyst of Sikkim merging with India in 1975.