Below are some of his biggest blunders that cost him the war.The invasion of the Soviet Union. The Battle of Britain. Cancellation of experimental weaponry programs. The order to “never withdraw” Using the Me-262 as a bombardier. Absence of women working in the factories. The declaration of war against the United States.
Delay of Operation BARBAROSSA. Because of the annual spring floods in eastern Poland and western European Russia, 15 May was the earliest possible date for the start of the invasion of Russia. As early as 27 March Hitler estimated that the campaign against Yugoslavia would delay the invasion by about four weeks.