A friend and I played this game for 4 hours (2 separate campaigns) while asking each other questions and giving each other tips as we figured something out.  For the life of us, there seems to be zero logic in where your units appear on the tactical map.  I should be able to somehow provide a formation so that my archers are NOT standing in front of my heroes; In any other game your archers would be behind other units.  What am I missing?  Is there some magical click spot that lets me control tactical unit formations?

At least give us a turn 0 where we can't see the enemy but I can rearrange my units before the main battle.