Surprisingly Helicopters are missing in action in this conflict. Threat of air defence may be a reason but among UAVs and Helicopters, certainly UAVs are being preferred

https://twitter.com/warsmonitoring/status/1312815220268699651

Built-up area being shelled

https://twitter.com/RALee85/status/1312957535310229505

Chinese are mobilising to gain to stronger hand in negotiations, at each stumbling block, they will use force to change facts on ground. The mobilisation seems enuf to commence a War. Likely sizeable forces undergoing Training in depth areas.

That said China doesn't want war.
1 Chinese strength in Unmanned Systems, large sized airborne/ air assualt forces and mechanisation will manifest in contact war. It will be supported by electronic, cyber and cognitive warfare to overwhelm enemy public opinion to psychologically defeat the enemy

2

So for ease of access I will keep adding all new books that I read in this thread.

Starting this difficult to find book.. 'Sentinels of the North East' by Major General D K Palit today.. First thing I noticed is this map of Assam in 1900. See a dashed line consisting most of North East India as we know today. Less parts of Arunachal Pradesh. Younghusband's expedition was still two years away and Lieutenant Colonel Bailey is still to survey Brahmaputra :)

India has been fighting insurgencies since 1960s(?). Most of these were secessionist in nature but initial ones in North Eastern states received a setback after independence of Bangladesh. One flank was secured. Now these insurgencies didn't share borders with an enemical nation Then in late 80s, Afghanistan was secured by West.. subsequent fall of USSR freed religiously motivated fighters who were required to be diverted and fuze in Kashmir was ignited. That, which was tried in 1947-48 and 1965 for shorter duration was now tried as a standing strategy