Operation Cornflakes was a World War II Office of Strategic Services PSYOP mission in 1944 and 1945 which involved tricking the German postal service Deutsche Reichspost into inadvertently delivering anti-Nazi propaganda to German citizens through mail.

Operation Cornflakes was a World War II Office of Strategic Services PSYOP mission in 1944 and 1945 which involved tricking the German postal service Deutsche Reichspost into inadvertently delivering anti-Nazi propaganda to German citizens through mail.