Austria and Sudetenland were both disgruntled, ethnically German areas who would've been facing arguably the most impressive cavalry and infantry at the time tho... a better comparison to that is modern day East Ukraine-Russia. Where is the Talibans heavy armory? Where is there air support, their intelligence capability? It's a bunch of insurgents with 50 cals mounted on pick up trucks versus an army that had TWENTY YEARS to prepare for them with American backing, they (Taliban) literally picked up better weapons and tech from cowardly Afghan deserters... I feel bad for any brehs that had to put in blood sweat and tears training and protecting these nincompoops Jesus. There's no reason they should've beat back the national army unless they wanted it to happen, which is what I believe. So therefore, fukk Afghanistan (the government and the Taliban)
You're looking at it from the western mindset, the same mindset that failed in afghanistan in the first place and also failed vietnam. Taliban don't need heavy artillery cause they got human resources and all the time in the world. If the Afghan military shoots back, the Taliban will still be there. If they use their artillery, the Taliban will still be there. Absolutely nothing the Afghan soldiers did was going to eliminate the Taliban, because the fukk-ups that perpetuate the Taliban were already made by the politicians and warlords and those folk weren't going to change. So the military had a choice - go down fighting for zero fukking reason, die and leave your wife and daughters to be sold off to some degenerate Taliban fighter, or negotiate a surrender that was inevitable anyway and still be there to protect your family and give them a fighting chance of survival.