The US started plans to construct its first nuclear battlefield weapon.
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Albert Einstein warned against hydrogen bombs on the ''Today with Mrs. Roosevelt" weekly TV show.
The US tested the TX-17 thermonuclear bomb for the first time in Bikini Atoll of the Marshall Islands.
North Korea tested its first intercontinental ballistic missile (ICBM).
Machine guns were used for the first time in a battle in Omdurman, Sudan, Africa.
The United States conducted its first and only nuclear artillery test at the Nevada Test Site.
