Visible Hexes/LOS

[Bacillus98]

Well VM, that makes a little more sense. What I am trying to do is understand the real life concepts translated to board/pc game. I am imagining a commander looking through his binoculars, which I would assume have a 3km range, but would a battalion be spotted across a river 3km away? The river in question, is the Vop river, which is no slouch. I am guessing there has to be some type of recon element to be able to identify enemy forces in a sufficient concentration. I am trying to avoid my HQ units from being blasted into oblivion since I thought they were safe from front lines 3 to 4 hexes away front line. My PBEM opponent is very skillful, so I hope to pick up a trick or two to avoid such carnage in the future!