Multiple Unit Attacks

[TMHarris]

I just bought the game a few days ago. The manual looks pretty complete, but says nothing about how to stage ground attacks in which multiple units combine their attack factors against a single enemy unit. Can anyone clue in a new guy on this? I know atty and bombers support attacks with indirect fire, but what about, say, if you wish three panzer divisions to attack a single enemy infantry division?

Thanks.

OK. After going through some of the teaching scerarios, I have a better idea of what's going on. I can see that the answer to my question is: No, attacks are performed one ground unit at a time.
If that's wrong, or I'm not quite getting the format, feel free to correct the new guy.

TMH