Historical Storyteller
Four Thousand Club
Probably not. The players are going to be resistance fighters in a Central American city. I don' think they'd take kindly to an invader in their midst. Not exactly impossible but you'd be facing an uphill battle IC.
And piloting mechs will likely be a mission-by-mission basis, doing it "when possible" on a job.
Sounds like a challenge, I'll take you up on that. It also sounds like a lot of work, but it's something I can do. I believe we can work this one out, I can even be something of an antagonist or an opponent for the players here.
I have a proposal, a wild one. You can control the mechas. I'll be the one controlling the ground troops.
I favor infantry and cavalry over tanks and artillery. But if needed, I think I can spend a little time learning the ropes on tank warfare.