Smoke in WW II

[Imp]

So why wasn't it used more often? Or was it? I've never heard of smoke used to any significant degree in major landings like D-Day or Tarawa. Just wondering aloud why not; seems like it would prevent many casualties if properly employed under the right conditions.

You can see the answer with respect to landings in game, ships produced their own smoke screen when needed so navel units do not have smoke ammo.
As far as I know & dont take it as right USA & Brits used smoke quite a lot but it was in short supply for other nations