1918 – Born in New York City on the 12th of May.
1936 – He became a leader in the Young Communist League.
1939 – He graduated from the City College of New York with a degree in electrical engineering.
1940 – Joined the Army Signal Corps, where he worked on radar equipment.
1942 – According to his former KGB handler, Alexandre Feklisov, Julius Rosenberg was originally recruited by the KGB on Labor Day, by former KGB spymaster Semyon Semyonov.
1944 – After Semenov was recalled to Moscow, his duties were taken over by his apprentice, Feklisov.
1949 – After the war, the U.S. continued to resist efforts to share nuclear secrets, but the Soviet Union was able to produce its own atomic weapons.
1950 – It was then discovered in January that Klaus Fuchs, a German refugee theoretical physicist working for the British mission in the Manhattan Project, had given key documents to the Russians throughout the war.
– Through Fuchs’ confession, U.S. and United Kingdom intelligence agents were able to make a case against his "courier," Harry Gold, who was arrested on the 23rd of May.
1951 – The case against the Rosenbergs and Sobell began on the 6th of March.
– The Rosenbergs were convicted on the 29th of March, and on April 5 were sentenced to death by Judge Irving Kaufman under Section 2 of the 1917 Espionage Act, 50 U.S. Code 32, which prohibits transmitting or attempting to transmit to a foreign government information "relating to the national defense.
1953 – The couple were executed at sundown in the electric chair at Sing Sing Correctional Facility in Westchester County, New York, on the 19th of June.
1956 – The government claimed he had been deported, but the Mexican government officially declared that he had never been deported.