The Desert Air Force In World War II offers readers an interesting first-person perspective on what it was like to fight with the Allies in the skies of the Mediterranean theater of operations during 1940-1942. For my review please see here.
The wisdom of the two-week German campaign in Crete remains heavily debated to this day. On the one hand, there is no doubt the loss of Crete weakened Britain's position in the Eastern Mediterranean at a crucial point in the war. On the other hand, some have argued the Germans lost an opportunity to seal off the Central Mediterranean via attacking Malta, astride Axis supply lines to North Africa.