The German invasion of Crete in May 1941 stands as a landmark in the history of airborne warfare. Up until that point, airborne operations had been used mainly in a tactical and operational context to seize key objectives in advance of the ground forces, such as the seizure during the Balkan campaign of the bridge over the Corinth Canal on the 26 April 1941, and the seizure of the Belgium fortress of Eban Emael on the 11 May 1940. The German invasion of Crete (codenamed Operation Merkur, or Mercury, after the Roman God of communication, travel and thievery – the counterpart of Hermes, the messenger of the Gods in Greek mythology) has been the only strategic airborne operation aimed at attacking and occupying such an important target. The operation was the brainchild of Generalmajor Kurt Student, the commander, and fanatical proponent of the airborne arm (the Fallschirmjäger) who believed that the paratroopers could operate in their own right and not merely be used to support the Wehrmacht.
The island of Crete is just over 160 miles long and varies from seven to thirty-six miles in width. There are four mountain ranges (that almost seem to form a continuous spine along the island) that all come together in the central mass of Mount Ida. To the southwest is the Sphakia (White) mountain range, which literally falls into the sea at certain points and make access to the area very difficult. Rain falling on this range irrigates the northern strip of coastal land around Suda Bay and supports the town of Canea.