Enigma intelligence points toward the airfields

The planning report identifies Heraklion and Maleme as the probable objectives because Crete was to be denied as an enemy air base. Wavell's access to Bletchley Park reporting and Enigma intercepts likely gave the warning a firmer basis than its cautious wording reveals. The defenders knew the likely targets, but still had to turn that information into effective deployments and reserves. Intelligence collection could not compensate for weak command arrangements or a dispersed defence.