Combining Mods Packs?

[BeyondBeale]

Howdy folks! I've been playing with this game for a few years off and on, and I'm trying to upgrade to a better detail pack for the Axis, US, and UK forces. I've downloaded the three zips, which each contain two *.cmb files, one for summer and one for winter for the respective force.
Here's the problem I have: How do I combine two of these files so I can utilize both the highly detailed Axis and US/UK forces on the same scenario? I've never really played with the Scenario Editor much, so it's somewhat foreign to me. Your guys' help would be greatly appreciated.

-BB