Slitherine

I am presently playing cuijason as the Soviets in the BA2 Open Fields scenario. There is a building/hut on the far right of the Soviet position about half way up the map. I can see that there is (was) an infantry unit in the hut but my armour was unable to fire from maybe three spaces away as there was "no line of sight" even though the terrain between my armour and the hut looks flat/normal.