Good question. I knew that a sharp eye'd CMBB player (such as you) would realize that the tanks in some scenes were out of scale. Many of the scenes, especially long shots, would not have shown the tanks in enough detail to understand what was going on. In those instances I used a Unit Scale of +1 to make the tanks easier to see (artistic license). I never went above a +1, and I used a 'Realistic' Unit Scale in scenes that allowed for its use.