 On 12 April 1943, Heinz Guderian noted he was "resigned" and "burned out".Jeschonnek was acutely aware he was deeply involved in the failures of the "Luftwaffe"; Göring could not be blamed for everything.Jeschonnek would justly be held accountable for the overestimation of the Ju 88, the He 177; in creating an air force with no reserves, unfit to fight a protracted war; in agreeing to stop aircraft development; to leave fighter production low in favour of medium bombers, and in failing to properly mobilise his 1939 armament program; in apparently underestimating the Anglo-American air threat; in agreeing to the air logistical operations at Stalingrad; in failing to develop a strategic air arm and air transport command; and in failing too late to create air defence forces.