Issued by Rear Admiral John Godfrey, but most likely written by his assistant, Ian Fleming, the memorandum whose 28th scheme resulted in "Operation Mincemeat" had what name? The purpose of Operation Mincemeat was to disguise the 1943 Allied invasion of Sicily. The plan involved using the body of a tramp who had died from rat poisoning, dressing him as an officer of the Royal Marines, and planting fake documents on his body. The memo is notable for comparing the deception of an enemy in wartime with fly fishing.