The M114 bomb was a four pound U.S. anti-personnel bomb and biological cluster bomb

Cluster bomb

A cluster munition is a form of air-dropped or ground-launched explosive weapon that releases or ejects smaller sub-munitions. Commonly, this is a cluster bomb that ejects explosive bomblets that are designed to kill enemy personnel and destroy vehicles...

 sub-munition. The M114 was used in the M33 cluster bomb

M33 cluster bomb

The M33 cluster bomb, also known as the Brucella cluster bomb, was a U.S. biological cluster bomb developed in the early 1950s and deployed in 1952. It was the first standardized biological weapon in the U.S. arsenal.-History:...

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History

The M114 was a sub-munition for the M33 cluster bomb, as such, it was the first standardized U.S. biological weapon in 1952. The M114 was an improved version of a British World War II-era bomblet that was designed to disperse anthrax

Anthrax

Anthrax is an acute disease caused by the bacterium Bacillus anthracis. Most forms of the disease are lethal, and it affects both humans and other animals...

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Specifications

The M114 was similar to a pipe bomb

Pipe bomb

A pipe bomb is an improvised explosive device, a tightly sealed section of pipe filled with an explosive material. The containment provided by the pipe means that simple low explosives can be used to produce a relatively large explosion, and the fragmentation of the pipe itself creates potentially...

, it had a 21 inch tube with a diameter of 1⅝ inches. 108 M114s were clustered into the M33 cluster bomb; each had its own detonator and was ejected from the M33 while the bomb was still aloft. Each M114 held 320 milliliters of Brucella suis.