@HeroesandvillainsOS Copy and pasting from the wiki tends to cause there to be a false space at the beginning of the faction name. Don’t copy and paste from there it’s known to cause issues. Write it out manually.
If it’s still not working, please post a screenshot of your Military AI Commander and any Objective Placement modules open so I can see how you set things up.
The problem isn't the copy and pasting because I wrote it in and it still didn't work. For the mission, I copied one of your scenarios into the editor, and changed all the spots where it said 3cb_faction_... and changed it to rhs_faction_usmc_d. It's a new editor save, so it's not using any config's or whatever you had packaged in your mission.
Edit: I realized that the orbat somehow got screwed up, I just re-categorized them and now it works.