I can't see much from your picture, JArraya. Supply easily gets blocked from 'across the flot' in game. I've raised this with Dave many times over the years, and there have been many tweaks. It's difficult to get right the effect of enemy firepower coming from in front of units stopping supply units getting in behind those units, I feel. But you certainly don't have to have enemy troops behind your flot to have your supply lines coming out of the flot interdicted by fire. The enemy in the pic certainly looks close enough, to me, for this to happen (there's at least a mortar unit in range, right?). I agree, however, that it shouldn't happen in night conditions. Can you post the save here so I can have a look using the devbuild, please, so I can see exactly what the enemy is doing? If I can get it working with the latest devbuild, which has some issues. We're only a week away from a new beta build, of course...