Question: What German Field Marshall was the uncle of Helmuth von Moltke the Younger, claimed to have ruined the Schlieffen Plan?
Sentence (from "Kreisau Circle"): The group began to falter after Helmuth von Moltke was arrested by the Gestapo in January 1944 and eventually came to an end when most of its members were arrested following Claus von Stauffenberg's attempt on Hitler's life on July 20, 1944.
Relevant evidence: No