@KitsuVonKraft Logistics, logistics logistics my friend! Since they were carrying all the food and supplies on them, I'm assuming that the invaders were already going to be cutting things very thin to start with, so they probably didn't have any spare supplies in the event of the destruction of just a fraction. Although the sheer incompetence of the invaders is a weak point, who doesn't send scouts over the overreaches of a mountain to prevent partisan activity? That's the standard playbook for any occupying force! As for the poisoned water, well, there isn't enough military to actually confront them, so the suffering to the enemy troops can be put under necessary. Truthfully, the better definitions of war crimes can be found in the Hague Conventions... lets see...
** Article 23
Besides the prohibitions provided by special Conventions, it is especially prohibited:--
To employ poison or poisoned arms; **
Well damn...
** Article 23
Besides the prohibitions provided by special Conventions, it is especially prohibited:--
To employ poison or poisoned arms; **
Well damn...