In 1943, the Allies set a dead man adrift off Spain. The corpse of “Major William Martin” carried a set of keys, theater stubs from a recent performance, a bank overdraft notice — and “secret documents” that detailed a plan to invade Europe via Sardinia.

The ruse worked — the Germans found the documents and prepared for a Sardinian attack that never came, and the Allies successfully invaded Europe through Sicily.

Who was the corpse? Apparently he was a vagrant Welsh alcoholic named Glyndwr Michael who ingested rat poison — a rare posthumous war hero.