Considering that inRP the Marine Corps is generally played as being a part of the Liberty Navy...I'm not sure how you plan to represent the Marines in game, or how that'd be any different from what the [LN] and other Navy Fleets already do.
You may also want to consider using the Liberty Navy ID and IFF, unless you intend to portray sort of a space version of Marine Corps Force Recon, or something...since functionally the LSF and LN ID's represent two very different groups, with different missions.
Also, while I think your recolored USAF emblem looks pretty cool, you should probably use actual Marine Corps emblems..if you're gonna try to go with something that isn't a reworked Libertonian symbol...but that's just my opinion, I s'pose.
Anyway, I'm always happy to see more people giving lawful play a try, and if you have any questions about Libertonian lore, or the layout of "The Armed Forces of The Republic" inRP, or other military things related to Liberty, I'd be happy to help you out.
![[Image: CHI4y9i.png]](https://i.imgur.com/CHI4y9i.png)