US Sprites

[Fargengru]

I understand sprites aren't exactly the most important thing, they just kind of add a little immersion to seeing the combat going on, more so than just seeing unit type boxes clashing on a map. But why is it the American sprites don't use the correct helmets? I mean, was it difficult to include the M1 helmet as a sprite? The current ones look like the Polish helmet in game, just recolored.