Since some members have hypothesized how the events may have unfolded , I shall give my version of the story:
CONTEXT
1. China has been, for the past few years, responding to the Indian buildup of Infrastructure along its borders. Modi came to power promising a strong military and border ( like every other right wing leader). India started to build up border infrastructure that it previously never bothered to due to financial as well as geographical constraints. Also, previously, Indian Army Strategists never pushed for border infra as there was a chance that these infrastructure could make the enemy nation's advance easier ( if the enemy army is well mechanized and stronger - like China's).
Note :
Kailash is very important to RSS and right wing hindu nationalists. Much more important than Tibet. In fact, if India smells blood against China and gets back Aksai Chin ( unlikely , but still ), I am very sure that a Right wing lead India will try to get these holy lands of Hindus.
2. So, Tensions between the two countries have got intense especially in the past few years. And the troops on ground has reacted to the general rise in tensions by engaging in brawls along contested border areas.
WHAT HAPPENED ON 15 June ?
1. Galwan is one among the many flash-points between India and China's Armies. "Many Flash-points" because the borders between India and China are drawn much worse than a Kindergartner's attempt at freehand (with an blunt pencil and an eraser that is prone to smudge ). The two countries don't agree on who actually owns the land in many places ( even though the land in question is generally a rocky and barren wasteland fit to be used as a set-piece of Martian Landscape for a movie).
2. So, Galwan being one of them, the soldiers from both nations have engaged in minor scuffles and exchanges. But this is where I am going to introduce the scope for some drama. It is my understanding that Chinese Commanders in charge of this place set up a surprise for Indian soldiers so as to get back at them for a mistake they made prior incident/incidents.
3. Remember the video showing Indian soldiers ganging up on a lone Chinese soldier - with him being kicked on while on ground trying to protect himself with a riot-shield ? We could also see a Chinese Armoured Vehicle behind them in the footage. It was apparently taken days or weeks prior. I don't know if this was the incident that triggered all this but the fact that Indian soldiers captured a video of this and made it public certainly would have made a Chinese commander not so happy.
4. So of course, the Chinese Commander ordered for some new "equipment ". Melee weapons that'd made quick work of the target. And this time, the Chinese side was ready to reply in kind. I have heard that the Indian Commander Babu went to inspect the area where the incident took place at late evening (7;30 pm). I don't know why he'd personally do this. But then -
5. I read that when all this was happening, Indian and Chinese side had agreed to disengage. So, on June 15, Babu (along with two other men of his ) must have went to check it ( at 7:30 in the evening) that the Chinese had in fact disengaged and pulled back ( from their own claimed region). There were two tents at the place. I am pretty sure that the Chinese were in the tent (with melee tools).
6. "Burning the tent" I don't know the veracity of this incident that Indians claim happened. It seems a bit "over dramatic" considering the context of "disengagement agreement" made recently and all. But it may be that when Babu and his men came to check upon the place, they saw these tents and the Chinese troops within and a quarrel ensued. In a fit of rage or poor judgement, Babu or a soldier might have set fire to the tent to try and make a statement. But a statement like this might've been what the Chinese troops wanted.
The Chinese of-course, reacted to this overreaction by drawing out the weapons they bought in. The story of Babu and his two men end here. They are dead/ critically injured. Chinese side now have the 3 Indian men (dead/ nearly dead)
7. Over at the Indian base concerns are sure to mount over why the superior and men were taking time. So a team goes out to the location. They may have with them a few medics ( in anticipation of medical emergency , but it is likely that the medics suffered the same fate that befell the troops ).
The Chinese by this time knew that more would come in search of Babu and Co and therefore called upon their own troops. They were ready for the Indian troops coming in.What this'd also mean is that the Chinese numbers were more than likely to be a bit bigger than the Indian ones.
8. The Indian team asks for the bodies and of-course in light of the language barrier, darkness of the night, generally cold and thin air etc sense and reasoning are out-of-the-window. A big scuffle happens and many in the Indian team ends up falling off a cliff. Few Chinese are likely to have fallen along with the Indians but the Chinese rescue their men and capture the remaining Indian troops. The Chinese are likely to have sustained injuries (even one or two critical ones) but it should be noted that the Chinese were well prepared for this battle (with protective gear and tools). The Chinese are also likely to have medical teams waiting for quick attention and tending.
9. The cold Galwan river snuffs out the life of many Indian troops who fell into it. I don't know how well equipped the Indian troops were regarding Medical staff and Rescue but considering that it may have taken place at night and considering the terrain, climate and isolation , I don't think Indian side could have done anything drastically different. Also to be considered is how violent the Galwan river would've been since it is summer.
We all know what happened after.