It shows how little you know of HIgh Altitude Warfare.
Unacclimatised troops cannot fight against Acclimatised troops which the Chinese were.
The effects of high altitude on humans are considerable. The percentage saturation of hemoglobin with oxygen determines the content of oxygen in our blood. After the human body reaches around 2,100 m (7,000 feet) above sea level, the saturation of oxyhemoglobin begins to plummet.[1] However, the human body has both short-term and long-term adaptations to altitude that allow it to partially compensate for the lack of oxygen. Athletes use these adaptations to help their performance. There is a limit to the level of adaptation: mountaineers refer to the altitudes above 8,000 metres (26,000 ft) as the "death zone", where no human body can acclimatize.
Acclimatization is the process in an individual adjusting to a gradual change in its environment (such as a change in temperature, humidity, photoperiod, or pH), allowing it to maintain performance across a range of environmental conditions.
It is a regimen that takes a minimum of three weeks and even that is dependent on the individual response.
Pulmonary oedema occurs to both acclimatised and unacclimatised troops. It is fluid accumulation in the air spaces and parenchyma of the lungs.[1] It leads to impaired gas exchange and may cause respiratory failure. It is due to either failure of the left ventricle of the heart to adequately remove blood from the pulmonary circulation ("cardiogenic pulmonary edema"), or an injury to the lung parenchyma or vasculature of the lung ("noncardiogenic pulmonary edema"). Whilst the range of causes are manifold the treatment options are limited, and to a large extent, the most effective therapies are used whatever the cause. Treatment is focused on three aspects: firstly improving respiratory function, secondly, treating the underlying cause, and thirdly avoiding further damage to the lung. Pulmonary edema, especially in the acute setting, can lead to respiratory failure, cardiac arrest due to hypoxia and death.
The fact that unacclimatised Indian troops responded to their call of duty and displayed great valour against Chinese acclimatised troops speaks of the stoic, determination and the love for their Motherland..
The fact that thereafter the Chinese in all other confrontation got a bloody nose speaks of what Indian troops can do when acclimatised and on equal footing!