Why trust those fuckin villagers?
Cynical, war-weary, experienced soldiers like those- on God's mission to destroy 'demons' and 'necromancers', suddenly agree to take drink from people they now know to be Godless and suspect of killing the previous unit of Bishop's men? I suspected it a mile off.
I'd have sought to camp separately, outside the village, and even pre-planned to take my squad's own food/water supplies?