This also worked well in Civil War Generals 1 & 2 where each hex had a terrain boost/decrease, morale gain/decrease, speed affect, etc. These conditions were based on proximity, landscape, snipers range, woodlands, rivers, valleys, towns, hills, you get the point. Some great ambushes came out of it also.
It was very strategic because you could move two hexes and be at a big disadvantage...you really had to plan your attack and approach.