M114 bomb

The M114 was a sub-munition for the M33 cluster bomb, as such, it was the first standardized U.S. biological weapon in 1952.

[1][2] The M114 was an improved version of a British World War II-era bomblet that was designed to disperse anthrax.

[3] The M114 was similar to a pipe bomb: it had a 530-millimetre (21 in) tube with a diameter of 41 mm (1+5⁄8 in).

[1] 108 M114s were clustered into the M33 cluster bomb;[1] each had its own detonator and was ejected from the M33 while the bomb was still aloft.

[4] Each M114 held 320 milliliters of Brucella suis.