The Might of the Luftwaffe

In The Might of the Luftwaffe, Oberbefehlshaber Hermann Goering dies while visiting Luftwaffe units in Austria. His replacement, Robert Ritter von Greim, proves to be a great commander and leads the Luftwaffe in several victories, and allows Nazi Germany to survive.

POD
The point of divergence is that after the Luftwaffe units become demoralized after losing in the Eastern Front, Fueher Adolf Hitler sends Hermann Goering to bring their morals back up. He heads to several bases in Germany before heading to one in Austria. Austrian resistance members plot to kill Goering. While driving in his car an Austrian resistance member shot a captured MP40 at the car. The chauffeur is killed and the car crashes into a tree. The resistance then executes Goering. After Goering does not arrive in the airfield Hitler sends SS units to find him. They find him dead next to the road. Hitler has the SS burn the nearby village of Gotzis. Hitler appoints Robert Ritter von Greim leader of the Luftwaffe.