Because vanilla Generals isn't good enough for you. Realism overhauls and graphical enhancements are the main points of existence of this mod. If you want tons of new units, this is not the mod for you.
Just a little update:
To put a realism touch to the Comanches, they will now pitch while firing their weapons. Their minimum firing range is also increased so that they would not bent over 90 degrees to shoot some random Red Guard below them or having the missiles traveled in an offensive way.
If you want to see a video, comment in the comment section. Although, I find it quite unnecessary. Welb.