T13 Beano Grenade

The T13 Beano (sometimes capitalized as "BEANO") was an experimental grenade developed by the Office of Strategic Services (OSS; later became the Central Intelligence Agency), with assistance from the Eastman Kodak Corporation, during World War II. Intentionally designed to resemble a baseball under the expectation that American soldiers would already be familiarized with its use, the T13 used a special fuse and a unique arming mechanism to ensure it would detonate on impact. Development of the T13 began in 1943 or 1944, and proved promising enough that limited examples were field-tested on the Western Front in 1945, but accidental casualties during testing led to the program's discontinuation by the end of World War II. The T13 is not known to have seen any actual combat or operational usage, and most non-inert examples were destroyed after the war's conclusion.