Original: The Red Army Faction ( German : Rote Armee Fraktion ) , shortened to RAF and in its early stages commonly known as Baader-Meinhof Group , was one of postâ '' World War 2 Germany 's most violent and prominent left wing terror groups .
Simplified: The Red Army Faction or RAF ( German Rote Armee Fraktion ) , was one of postwar West Germany 's most active and prominent militant left-wing groups .