Ah, I was thinking it would remain under French control. During the Cold War it would probably do things without a U.N. mandate (sending forces into Africa to support causes beneficial to the West with costs defrayed among NATO or something). Afterwards though, it's a possibility. The U.N. actually did pass a resolution for intervention in Darfur, it's just that nobody wanted to pony up troops and implicitly take ownership of that mess. I'm pretty sure the same thing might have happened in the Congo.
Rough timeline sketch
-Brazil invades Guiana
-French military is sent in and breaks Brazil's back
-Legion stays there to guard it while Algeria wraps up. Its commanders are furious but can do nothing from the other side of the Atlantic but angrily chew the carpet
-Legion makes new home in Guiana to guard it permanently, stage further operations from there, and replace Sidi Bel Abbes in Algeria
-The Legion stages many interventions in Africa with costs defrayed by those who support them (France contributes the force, others contribute the money). Good candidates would be more intervention in Shaba I and an intervention in Biafra in support of the rebels. France heavily supported them IOTL. Cost defrayed mainly by Spain, South Africa, Portugal (all of whom supported Biafra as well IOTL) and small amounts from others who also did.
-Possible semi-permanent contingent in Congo similar to the one they have in Chad IOTL
-USSR collapses in 1991 and the real stuff starts
-With Russia cooperating with West and China wanting stability for investment, resolutions are passed in the U.N. Security Council for interventions in the Congo Wars, Liberia, Sierra Leone, Darfur, Somalia, Rwanda, and possibly Angola, Burundi, and Zimbabwe if that gets really ugly (so much so that it alienates the Chinese). The Legion provides forces for all of these, with costs being defrayed by all U.N. members in proportion to GDP.
-This is in addition to all OTL conflicts (Lebanon, Persian Gulf, Afghanistan, etc.)
-Ninja bonus points if they reform into a true elite branch/unit like the USMC or Rhodesian Light Infantry, adopt Rhodesian Fireforce tactics in the Congo and other places to compensate for bad local infrastructure (yes, I know Rhodesia was bush/savannah and the places I listed were jungle and, but so was Vietnam where the tactic originated with Eagle Flight and the Mobile Strike Force), develop and extra potent native SOF capability (like the GCP special operations troops the Legion already has, but more in number and diversity of roles and integrated into French Special Operations Command)
Hell, I would try to join this unit if it existed
