I got to tinkering offline in a German Panzer, and wanted to ask if someone could confirm the following observation.......
A tank, at 1000 yards from the player's panzer, would appear to fill the bottom of the large 4 mil triangle with the tracks of the tank. So one could surmise that if a player was to look at an opposing GV, and that the opposing GV's tracks "extended" to each side of the triangles bottom, then they were closer than 1000? This assumes that the player is viewing the opposing GV from the flank.