What is a common name for the effort of Kurt von Plettenberg and other German officials attempting to assassinate Adolf Hitler which originally referenced only part of the plot?
Kurt von Plettenberg: Kurt Freiherr von Plettenberg (31 January 1891 in Bückeburg – 10 March 1945 in Berlin) was a German forester, cavalry officer and a member of the German Resistance (Widerstand). 20 July plot:  The name Operation Valkyrie, originally referring to part of the conspiracy, has become associated with the entire event.
i don't know