- Second World War (1939-1945)
- Kapitän zur See (Captain Royal Navy)
- Kommandeur, Marine-Flak-Regiment 22, Kommandanten der Seeverteidigung Loire, Kriegsmarine
- Awarded on:
- April 11th, 1943
Awarded for his role in combating the British raid on St. Nazaire, Operation Chariot, on 28.03.1942. Due to the unusual behaviour of the British bombers it was Mecke who recognized the potential of a landing and put his troops on alert. His guns later opened fire on the British convoy despite their disguise as German vessels and also participated in the fight against the British landing forces.