You'll kinda see along the way- CTRG is involved in all sorts, but think of them as a beyond SF team. They'll be involved in key operations to find key intel on the CSAT, and as you'll see in the plot, things may escalate a lot. They can't share anything with other forces on Stratis, at all, and there's this mysterious sort of thing. So the US and UK forces are all kinda like, "the fuck are they". They're denied as a force existing on Stratis, but at the same time, the forces on the island itself just know it's some low-key group and don't really go there or bother about it.

Things will escalate- and we'll see ourselves playing characters in British and a US team respectively, not to mention a group of Guerllias quite quickly on (third mission maybe), which could be cool. The stuff in Takistan might be quite interesting, since it may be a very specific reason for the team's presence, though it could come later.