Yeah I purposely tried to make it as small scale as possible while making sure there were a few NPCs lying around in the background to make it seem like a big planetary invasion. The decision to team up would have been left to something like platoon commander to platoon commander. The unintended benefit of this is that if Aegis is ever going into a big battle and we’re gonna need backup, you don't have to pull random faceless mooks from out of nowhere. 

And thanks for the heads up about Colony, I did see them referenced in my research but I didn't think too much of it. And I never got around to playing the two Halo Wars games either, Windows Store doesn't do well on my computer. I’ll go check out their voice lines right now.