From the update:
The All Quiet on the Martian Front Kickstarter is off to a fantastic start. We reached our funding goal in under two hours and in less than a week we have unlocked a host of stretch goals! We have also revised the rewards to provide even more great free unlocks for the First Interplanetary War!
The US and Martian Force Lists are already posted so you can see what is available in the game!
If you haven't checked out all the amazing offerings yet, please visit the Kickstarter Campaign