Smith and Wesson patented the first metal bullet cartridges.
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Machine guns were used for the first time in a battle in Omdurman, Sudan, Africa.
The US SM-65 Atlas missile completed the first successful intercontinental ballistic missile launch.
An atomic bomb explosion was aired on TV for the first time.
The US tested the TX-17 thermonuclear bomb for the first time in Bikini Atoll of the Marshall Islands.
A nuclear bomb was lost off the coast of Georgia, US.
