M65 Atomic Cannon
Encyclopedia
The M65 Atomic Cannon, often called Atomic Annie, was a towed artillery
Artillery
Originally applied to any group of infantry primarily armed with projectile weapons, artillery has over time become limited in meaning to refer only to those engines of war that operate by projection of munitions far beyond the range of effect of personal weapons...

 piece built by the United States and capable of firing a nuclear
Nuclear weapon
A nuclear weapon is an explosive device that derives its destructive force from nuclear reactions, either fission or a combination of fission and fusion. Both reactions release vast quantities of energy from relatively small amounts of matter. The first fission bomb test released the same amount...

 device. It was developed in the early 1950s, at the beginning of the Cold War
Cold War
The Cold War was the continuing state from roughly 1946 to 1991 of political conflict, military tension, proxy wars, and economic competition between the Communist World—primarily the Soviet Union and its satellite states and allies—and the powers of the Western world, primarily the United States...

, and fielded by 1953 in Europe and Korea.

History

Picatinny Arsenal
Picatinny Arsenal
The Picatinny Arsenal is an American military research and manufacturing facility located on a lot in northern New Jersey near Lake Denmark. The Arsenal is the headquarters of the United States Army Armament Research, Development and Engineering Center...

 was tasked to create a nuclear capable artillery piece in 1949. Robert Schwartz, the engineer who created the preliminary designs, essentially scaled up the 240mm shell (then the maximum in the arsenal) and used the German
Nazi Germany
Nazi Germany , also known as the Third Reich , but officially called German Reich from 1933 to 1943 and Greater German Reich from 26 June 1943 onward, is the name commonly used to refer to the state of Germany from 1933 to 1945, when it was a totalitarian dictatorship ruled by...

 K5 railroad gun
Krupp K5
The Krupp 28-cm-Kanone 5 , in short K5, was a heavy railway gun used by Germany throughout World War II.-Description:The Krupp K5 series were consistent in mounting a long gun barrel in a fixed mounting with only vertical elevation of the weapon...

 as a point of departure for the carriage. (The name "Atomic Annie" likely derives from the nickname "Anzio Annie" given to a German K5 gun
Krupp K5
The Krupp 28-cm-Kanone 5 , in short K5, was a heavy railway gun used by Germany throughout World War II.-Description:The Krupp K5 series were consistent in mounting a long gun barrel in a fixed mounting with only vertical elevation of the weapon...

 which was employed against the American landings in Italy.) The design was approved by the Pentagon, largely through the intervention of chief of the Ballistics Section of the Ordnance Department’s Research and Development Division, Samuel Feltman
Samuel Feltman
Samuel Feltman was, at the time of his death, Associate Chief of the Research and Materials Branch and Chief of the Ballistic Section of the U.S. Army Ordnance Research and Development Division...

, and a three-year developmental effort was begun. The project proceeded quickly enough to produce a demonstration model to participate in Dwight Eisenhower's inaugural parade in January of 1953.

The cannon was transported by two specially designed tractors, both capable of independent steering in the manner of some extra-long fire engines. Each of the tractors was rated at 375 hp, and the somewhat awkward combination could achieve speeds of 35 miles an hour and negotiate right turns on 28 ft wide, paved or packed roads. The artillery piece could be unlimbered in 15 minutes and then returned to traveling configuration in 15 minutes more.

On May 25, 1953 at 8:30am local time, the Atomic Cannon was tested at Nevada Test Site
Nevada Test Site
The Nevada National Security Site , previously the Nevada Test Site , is a United States Department of Energy reservation located in southeastern Nye County, Nevada, about northwest of the city of Las Vegas...

 (specifically Frenchman Flat
Frenchman Flat
Frenchman Flat is a Tonopah Basin landform used as a nuclear weapons detonation site at the Nevada Test Site , some from Las Vegas, in the United States. Frenchman Flat is a dry lake, an alkaline desert depression which spans Area 5 and Area 11 within NTS...

) as part of the Upshot-Knothole
Operation Upshot-Knothole
Operation Upshot-Knothole was a series of eleven nuclear test shots conducted in 1953 at the Nevada Test Site.Over twenty-one thousand soldiers took part in the ground exercise Desert Rock V in conjunction with the Grable shot...

 series of nuclear tests. The test--codenamed Grable
Upshot-Knothole Grable
Upshot-Knothole Grable was a nuclear weapons test conducted by the United States as part of Operation Upshot-Knothole. Detonation of the associated nuclear weapon occurred shortly after its deployment at 8:30am PDT on May 25, 1953, in Area 5 of the Nevada Test Site...

--was attended by then Chairman of the Joint Chiefs of Staff
Chairman of the Joint Chiefs of Staff
The Chairman of the Joint Chiefs of Staff is by law the highest ranking military officer in the United States Armed Forces, and is the principal military adviser to the President of the United States, the National Security Council, the Homeland Security Council and the Secretary of Defense...

 Adm
Admiral
Admiral is the rank, or part of the name of the ranks, of the highest naval officers. It is usually considered a full admiral and above vice admiral and below admiral of the fleet . It is usually abbreviated to "Adm" or "ADM"...

. Arthur W. Radford
Arthur W. Radford
Arthur William Radford was a United States Navy Admiral, Commander-in-Chief of the United States Pacific Command and Chairman of the Joint Chiefs of Staff.Arthur Radford was born in Chicago, Illinois, in 1896...

 and Secretary of Defense Charles E. Wilson
Charles E. Wilson
Charles Edward Wilson was a CEO of General Electric. He left school at age 12 to work as a stock boy at Sprague Electrical Works, which was acquired by General Electric, taking night classes and working up to president in 1939.During World War II he served on the War Production Board as executive...

; it resulted in the successful detonation of a 15 kt shell (warhead W9
W9 (nuclear warhead)
The W9 was an American nuclear artillery shell fired from a special 11 inch howitzer. It was produced starting in 1952 and all were retired by 1957.-Description:...

) at a range of 7 miles. This was the first and only nuclear shell to be fired from a cannon.

After the successful test, there were at least 20 of the cannons manufactured at Watervliet
Watervliet Arsenal
The Watervliet Arsenal is an arsenal of the United States Army located in Watervliet, New York, on the west bank of the Hudson River. It is the oldest continuously active arsenal in the United States, and today produces much of the artillery for the army, as well as gun tubes for cannons, mortars,...

 and Watertown Arsenal
Watertown Arsenal
The Watertown Arsenal was a major American arsenal located on the northern shore of the Charles River in Watertown, Massachusetts. Its site is now registered on the ASCE's List of Historic Civil Engineering Landmarks and on the U.S.'s National Register of Historic Places, and it is home to the...

s, at a cost of $800,000 each. They were deployed overseas to Europe and Korea, often continuously shifted around to avoid being detected and targeted by opposing forces. Due to the size of the apparatus, their limited range, the development of nuclear shells compatible with existing artillery pieces (the W48
W48
The W48 was an American nuclear artillery shell, fired from a standard 155 mm howitzer e.g. the M114 or M198. It was manufactured starting in 1963, and all units were retired in 1992....

 for the 155mm and the W33 for the 203mm), and the development of rocket and missile based nuclear artillery, the M65 was effectively obsolete soon after it was deployed. However, it remained a prestige weapon and was not retired until 1963.

Survivors

Of the twenty examples of the M65 produced, at least eight survive on display. Most no longer have their "prime movers".
  • United States Army Ordnance Museum
    United States Army Ordnance Museum
    The U.S. Army Ordnance Museum is a museum that is in the process of being re-located to Fort Lee, in Fort Lee, Virginia. Its previous building—at Aberdeen Proving Ground in Aberdeen, Maryland—was closed in September 2010, although many outdoor exhibits are still accessible to the...

    , Aberdeen, Maryland
    Aberdeen, Maryland
    As of the census of 2000, there were 13,842 people, 5,475 households, and 3,712 families residing in the city. The population density was 2,166.2 people per square mile . There were 5,894 housing units at an average density of 922.4 per square mile...

     (still has the two large "prime movers" attached)
  • National Museum of Nuclear Science & History, Albuquerque, New Mexico
    Albuquerque, New Mexico
    Albuquerque is the largest city in the state of New Mexico, United States. It is the county seat of Bernalillo County and is situated in the central part of the state, straddling the Rio Grande. The city population was 545,852 as of the 2010 Census and ranks as the 32nd-largest city in the U.S. As...

  • Fort Sill Museum, Oklahoma
    Oklahoma
    Oklahoma is a state located in the South Central region of the United States of America. With an estimated 3,751,351 residents as of the 2010 census and a land area of 68,667 square miles , Oklahoma is the 28th most populous and 20th-largest state...

  • Freedom Park, Junction City, Kansas
    Junction City, Kansas
    Junction City is a city in and the county seat of Geary County, Kansas, United States. As of the 2010 census, the city population was 23,353. Fort Riley, a major U.S. Army post, is nearby...

    , overlooking Fort Riley
    Fort Riley
    Fort Riley is a United States Army installation located in Northeast Kansas, on the Kansas River, between Junction City and Manhattan. The Fort Riley Military Reservation covers 100,656 acres in Geary and Riley counties and includes two census-designated places: Fort Riley North and Fort...

  • Rock Island Arsenal
    Rock Island Arsenal
    The Rock Island Arsenal comprises , located on Arsenal Island, originally known as Rock Island, on the Mississippi River between the cities of Davenport, Iowa, and Rock Island, Illinois. It lies within the state of Illinois. The island was originally established as a government site in 1816, with...

    , Memorial Field, Rock Island, Illinois
    Rock Island, Illinois
    Rock Island is the county seat of Rock Island County, Illinois, United States. The population was 40,884 at the 2010 census. Located on the Mississippi River, it is one of the Quad Cities, along with neighboring Moline, East Moline, and the Iowa cities of Davenport and Bettendorf. The Quad Cities...

  • Virginia War Museum
    Virginia War Museum
    The Virginia War Museum is located in Huntington Park on Warwick Blvd., Newport News, Virginia. The museum contains exhibits on American military history from 1775 to the present.-History:...

    , Newport News, Virginia
    Newport News, Virginia
    Newport News is an independent city located in the Hampton Roads metropolitan area of Virginia. It is at the southeastern end of the Virginia Peninsula, on the north shore of the James River extending southeast from Skiffe's Creek along many miles of waterfront to the river's mouth at Newport News...

  • Watervliet Arsenal Museum
    Iron Building (Watervliet Arsenal)
    The Iron Building is a historic building at the Watervliet Arsenal in Watervliet, New York. It currently serves as the Watervliet Arsenal Museum....

    , Watervliet Arsenal
    Watervliet Arsenal
    The Watervliet Arsenal is an arsenal of the United States Army located in Watervliet, New York, on the west bank of the Hudson River. It is the oldest continuously active arsenal in the United States, and today produces much of the artillery for the army, as well as gun tubes for cannons, mortars,...

    , Watervliet, New York
    Watervliet, New York
    Watervliet is a city in Albany County in the US state of New York. The population was 10,254 as of the 2010 census. Watervliet is north of Albany, the capital of the state, and is bordered on the north, west, and south by the town of Colonie. The city is also known as "the Arsenal City".- History...

    , where they were all manufactured.
  • Yuma Proving Ground, Yuma, Arizona
    Yuma, Arizona
    Yuma is a city in and the county seat of Yuma County, Arizona, United States. It is located in the southwestern corner of the state, and the population of the city was 77,515 at the 2000 census, with a 2008 Census Bureau estimated population of 90,041....


See also



External links

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