A plot to arrest or even kill Adolf Hitler, hatched by of his most senior military staff, collapsed. Led by General Franz Halder, the architect of the invasion of Poland, many Generals were appalled by Hitler's plans to continue the conflict by invading Belgium and the Netherlands and feared that the adventure would founder in another Great War quagmire. Walther von Brauchitsch, who met with Hitler and was supposed to be the one to issue the order for his arrest, got cold feet and lost the opportunity to prevent Hitler from plunging Europe into another World War. However one of the conspirators, Colonel Hans Oster of German Military Intelligence, tipped off the Dutch and Belgians about Hitler's invasion intentions
