There are so many things to discuss here, so there are a few of them:
>what new tactics did the USSR and the USA came up with in Afghanistan?
>India, Pakistan and China are all active in the Himalayas, but would their incompetence let them actually fight a war there?
>are those Chinese high altitude tanks worth a dam, or is it just a waste of resources to send tanks to such places?
>are mules and bicycles the future?
>why haven't we seen the US Army wasting billions on making a robotic mule?
>does mountain warfare need extra speshul forces, or is it enough to use light infantry with some additional training?
>will drones and mortars with guided shells slaughter slowly moving infantry, making a mountain offensive against entrenched enemy positions suicidal?