How many is a Brigade?
Cause having enough footsoldiers to shake the ground
is like
unreasonably massive
You can have a stadium full of people screaming and yelling at their loudest, but I'm pretty sure the ground doesn't shake. That's just their feet against rickety metal constructionwork.

And true, Darkwolf.
I just don't believe that anything that is sentient and in space is content to lose control, and give it to someone else. If someone is in space, they are greedy or curious enough to do so. I doubt that they will easily let loose their freedom and control to someone else.