Dude enough with this your are talking about a small minority we despising as much as they despise us. No one holds soft corner for those cavemen.Because Pakistanis have an inferiority complex towards Afghans. You suck up to them and worship them.
This is not an army exclusive thing, you can't pin this to the army. Go on any social media site and you will see Pakis simping for Afghans and even defending them by cursing themselves and their own people, despite pretty much Afghans despising them to genocidal levels, and holding racial superiority beliefs over them.
All in all, you are only tough against Indians.