Priority?

I am a Ranger as you most likely know by know, and also a member of the GMT Brigade, a European branch of the Rangers. Now, the GMT Brigade is supposed to go help the DHPD, but what happens in my case, since I'm also a member of the Health Unit?
Am i supposed to priorities the Colossus or the group?
I would guess the Colossus, but since I'm not sure i thought it best to ask....