Bat bomb
Encyclopedia
Bat bombs were bomb-shaped casings with numerous compartments, each containing a Mexican Free-tailed Bat
Mexican Free-tailed Bat
The Mexican free-tailed bat , also known as the Brazilian free-tailed bat, is a medium-sized bat that is native to the Americas and is widely regarded as one of the most abundant mammals in North America...

 with a small timed incendiary bomb attached. Dropped from a bomber at dawn, the casings would deploy a parachute in mid-flight and open to release the bats which would then roost in eaves and attics. The incendiaries would start fires in inaccessible places in the largely wood and paper construction of the Japanese cities that were the weapon's intended target.

Developed by the United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 during World War II
World War II
World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...

, four biological factors gave promise to this plan. First, bats occur in large numbers (four caves in Texas are each occupied by several million bats). Second, bats can carry more than their own weight in flight (females carry their young—sometimes twins). Third, bats hibernate
Hibernation
Hibernation is a state of inactivity and metabolic depression in animals, characterized by lower body temperature, slower breathing, and lower metabolic rate. Hibernating animals conserve food, especially during winter when food supplies are limited, tapping energy reserves, body fat, at a slow rate...

, and while dormant they do not require food or maintenance. Fourth, bats fly in darkness, then find secluded places (often in buildings) to hide during daylight.

The plan was to release bat bombs over Japanese cities having widely-dispersed industrial targets. The bats would spread far from the point of release due to the relatively high altitude of their release, then at dawn they would hide in buildings across the city. Shortly thereafter built-in timers would ignite the bombs, causing widespread fires and chaos. The bat bomb idea was conceived by dental surgeon Lytle S. Adams, who submitted it to the White House
White House
The White House is the official residence and principal workplace of the president of the United States. Located at 1600 Pennsylvania Avenue NW in Washington, D.C., the house was designed by Irish-born James Hoban, and built between 1792 and 1800 of white-painted Aquia sandstone in the Neoclassical...

 in January, 1942, where it was subsequently approved by President Roosevelt.The Bat Bombers C. V. Glines, Air Force Magazine: Journal of the Airforce Association, October 1990, Vol. 73, No. 10. Retrieved 1 October 2006. Adams was recruited to research and obtain a suitable supply of bats.

Project details

By March 1943 a suitable species had been selected. The project was considered serious enough that Louis Fieser
Louis Fieser
Louis Frederick Fieser was an organic chemist, professor, and in 1968, professor emeritus at Harvard University. He was renowned as the inventor, in 1943, of a militarily effective form of napalm...

, the inventor of military napalm
Napalm
Napalm is a thickening/gelling agent generally mixed with gasoline or a similar fuel for use in an incendiary device, primarily as an anti-personnel weapon...

, designed 0.6 ounce (17 g) and one ounce (28 g) incendiary devices to be carried by the bats. A bat carrier similar to a bomb casing was designed that included 26 stacked trays, each containing compartments for 40 bats. The carriers would be dropped from 5,000 feet (1,525 m). Then the trays would separate but remain connected to a parachute
Parachute
A parachute is a device used to slow the motion of an object through an atmosphere by creating drag, or in the case of ram-air parachutes, aerodynamic lift. Parachutes are usually made out of light, strong cloth, originally silk, now most commonly nylon...

 that would deploy at 1,000 feet (305 m). It was envisioned that ten B-24 bombers flying from Alaska, each carrying a hundred shells packed with bomb-carrying bats could release 1,040,000 bat bombs over the target—the industrial cities of Osaka Bay. A series of tests to answer various operational questions were conducted. In one incident the Auxiliary Army Air Base in Carlsbad, New Mexico
Carlsbad, New Mexico
Carlsbad is a city in and the county seat of Eddy County, New Mexico, in the United States. As of the 2010 census, the city population was 26,138. Carlsbad is the center of the designated micropolitan area of Carlsbad-Artesia, which has a total population of 55,435...

, was set on fire when armed bats were accidentally released. The bats incinerated the test range and roosted under a fuel tank. Following this setback, the project was relegated to the Navy in August 1943, who renamed it Project X-Ray, and then passed it to the Marine Corps that December. The Marine Corps moved operations to the Marine Corps Air Station at El Centro, California
El Centro, California
El Centro is a city in and county seat of Imperial County, the largest city in the Imperial Valley and the east anchor of the Southern California Border Region, and the core urban area and principal city of the El Centro metropolitan area which encompasses all of Imperial County. El Centro is also...

. After several experiments and operational adjustments, the definitive test was carried out on a mockup of a Japanese city built by the Chemical Warfare Service at their Dugway Proving Grounds test site in Utah
Utah
Utah is a state in the Western United States. It was the 45th state to join the Union, on January 4, 1896. Approximately 80% of Utah's 2,763,885 people live along the Wasatch Front, centering on Salt Lake City. This leaves vast expanses of the state nearly uninhabited, making the population the...

.

Observers at this test produced optimistic accounts. The chief of incendiary testing at Dugway wrote: “A reasonable number of destructive fires can be started in spite of the extremely small size of the units. The main advantage of the units would seem to be their placement within the enemy structures without the knowledge of the householder or fire watchers, thus allowing the fire to establish itself before being discovered.” The National Defense Research Committee (NDRC) observer stated: “It was concluded that X-Ray is an effective weapon.” The Chief Chemist’s report stated that on a weight basis X-Ray was more effective than the standard incendiary bombs in use at the time. “Expressed in another way, the regular bombs would give probably 167 to 400 fires per bomb load where X-Ray would give 3,625 to 4,748 fires”.

One person involved in this project was actor Tim Holt
Tim Holt
Tim Holt was an American film actor perhaps best known for co-starring in the 1948 film The Treasure of the Sierra Madre.-Early life:...

. This was revealed in a conversation between Mr. Holt and Bob Marshall at a rodeo in Ada, Oklahoma
Ada, Oklahoma
Ada is a city in and the county seat of Pontotoc County, Oklahoma, United States. The population was 16,008 at the 2000 census. As of 2009, the city population was estimated at 17,019....

 in 1954 where Tim was signing autographs. The two had become friends during the summer of 1943 at El Centro. Apparently, Holt and his crew would carry canisters of bats in bombers, and release the canisters for bat deployment. If the canister opened properly, the crew would search for bats. If the canisters failed, the crew would retrieve the failed canister (along with many dead bats) to determine the reason for the canister's failure to open.

More tests were scheduled for the summer of 1944 but the program was cancelled by Fleet Admiral Ernest J. King when he heard that it would likely not be combat ready until mid-1945. By that time it was estimated that $2 million had been spent on the project. It is thought that development of the bat bomb was moving too slowly, and was overtaken in the race for a quick end to the war by the atomic bomb project.

Dr. Adams maintained that the bat bombs would have been effective without the devastating effects of the atomic bomb. He is quoted as having said:
The infamous "Invasion by Bats" project was afterwards referred to by Dr. Stanley P. Lovell, director of the Office of Strategic Services
Office of Strategic Services
The Office of Strategic Services was a United States intelligence agency formed during World War II. It was the wartime intelligence agency, and it was a predecessor of the Central Intelligence Agency...

 (OSS) as "Die Fledermaus Farce."

Cultural influence

  • The book Sunwing
    Sunwing
    Sunwing is a popular children's book written in 1999 by Canadian author Kenneth Oppel. It is the second book in the Silverwing series, preceded by Silverwing and succeeded by Firewing.- Part I :...

    written by Kenneth Oppel
    Kenneth Oppel
    Kenneth Oppel is a Canadian author. Born in Port Alberni, British Columbia, he spent his childhood in Victoria, British Columbia and Halifax, Nova Scotia. He has also lived in Newfoundland and Labrador, England and Ireland....

     was inspired by this plan.
  • The song "The Story Of The Japanese Bat Bomb" from the 2008 LP Doris, Buzz and Friends, written by John Krane, is also based on this plan, though it projects that its inventor was saddened by the bombs imminent detonation (there is no evidence of such conflict).
  • Adams and his bat bomb project are the subject of Derrick C. Brown
    Derrick C. Brown
    Derrick C. Brown, a poet/performer and former paratrooper born January 19th 1978, travels the world performing his written work. He has gained a something of a cult following for his performances, which incorporate spoken word, music and even magic...

    's poem, "The Project Known as X-Ray," collected in Scandalabra.
  • Some anime series like Mega Man
    Mega Man (TV series)
    Mega Man, known in Japan as , is a Japanese-American animated television series multi-produced by Capcom Productions, Ruby-Spears Productions, Ashi Productions and Ocean Group and is based on the game series of the same name. The TV series began in 1994 and ended in 1995, and was aired on many...

    (1994) and Bomberman Jetters
    Bomberman Jetters
    , often abbreviated as "BMJ" by Japanese fans, is an anime based on the popular video game series Bomberman created by Hudson Soft. The show ran for a total of 52 episodes in Japan on TV Tokyo. The soundtrack was composed by Kazunori Maruyama...

    (2002), and video games like Tiny Toon Adventures: Toonenstein
    Tiny Toon Adventures: Toonenstein
    Tiny Toon Adventures: Toonenstein: Dare to Scare is the second Tiny Toon Adventures-related game released on the PlayStation. It was developed by Terraglyph Interactive Studios and published by Vatical Entertainment in 1999.-Storyline:...

    (1999) use "bomb bats" as weapons and/or enemies.

See also

  • Project Pigeon
    Project Pigeon
    During World War II, Project Pigeon was American behaviorist B. F. Skinner's attempt to develop a pigeon-guided missile....

  • Anti-tank dog
    Anti-tank dog
    Anti-tank dogs were dogs taught to carry explosives to tanks, armored vehicles and other military targets. They were intensively trained by the Soviet and Russian military forces between 1930 and 1996 and used in 1941–1942 against German tanks in World War II...

  • Japanese Balloon Bombs
    Fire balloon
    A , or Fu-Go, was a weapon launched by Japan during World War II. A hydrogen balloon with a load varying from a incendiary to one antipersonnel bomb and four incendiary devices attached, they were designed as a cheap weapon intended to make use of the jet stream over the Pacific Ocean and wreak...

  • Military animals

External links

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