edit: at the same time, in the same conflict.
I remember reading a few years ago about a conflict in (I want to say) 1980’s Latin America where this occurred; however I can’t find anything about this with current online search tools. Did I hallucinate this or did this actually, and if so what groups?
It’s not like they backed factions based on ideology…
In virtually everyone of those proxy governments it was a dictator who agreed to back one side or the other