I get the OP's argument; the troops are very close together. In real life I'm a mechanized infantry squad leader in the US Army, so I'm more familiar with modern tactics than WW2 era, though I imagine a lot of the survivability stuff is pretty close. While there are exceptions (MOUT, crew served weapons, etc), IRL spacing is generally no closer than 5m between any two troops. That would make squads in game, if accurately spaced, occupy, at minimum, 5 action squares. I figure it isn't like that in order to simplify things for the user, and, besides, I'm not sure that, by itself, is the cause of high casualties. More so, I think its just that everything in game is very compressed. IRL, a mechanized infantry or tank platoon with good dispersion and fields of fire can easily occupy an entire gridsquare (1k x 1k) themselves. That makes even the 4k x 4k limit very, very small for the amount of troops that can get fielded; that is barely the limit for a mechanized company operation, much less a battalion or more. My assumption is that it is just to increase the pace of the action. Well, with that many troops in that small of a space you inevitably get high numbers of casualties. I'll have to test it, but I think if you cut the number of troops down to what you would actually see maneuvering on the amount of terrain you actually have to work with, the game casualties will more accurately reflect real life.