Updated:
Original:
Year
1942
Month Day
September 21

The Superfortress bomber takes flight

On September 21, 1942, the U.S. B-29 Superfortress makes its debut flight in Seattle, Washington. It was the largest bomber used in the war by any nation.

The B-29 was conceived in 1939 by Gen. Hap Arnold, who was afraid a German victory in Europe would mean the United States would be devoid of bases on the eastern side of the Atlantic from which to counterattack. A plane was needed that would travel faster, farther, and higher than any then available, so Boeing set to creating the four-engine heavy bomber. The plane was extraordinary, able to carry loads almost equal to its own weight at altitudes of 30,000 to 40,000 feet. It contained a pilot console in the rear of the plane, in the event the front pilot was knocked out of commission. It also sported the first radar bombing system of any U.S. bomber.

The Superfortress made its test run over the continental United States on September 21, but would not make its bombing-run debut until June 5, 1944, against Bangkok, in preparation for the Allied liberation of Burma from Japanese hands. A little more than a week later, the B-29 made its first run against the Japanese mainland. On June 14, 60 B-29s based in Chengtu, China, bombed an iron and steel works factory on Honshu Island. While the raid was less than successful, it proved to be a morale booster to Americans, who were now on the offensive.

Meanwhile, the Marianas Islands in the South Pacific were being recaptured by the United States, primarily to provide air bases for their new B-29s—a perfect position from which to strike the Japanese mainland on a consistent basis. Once the bases were ready, the B-29s were employed in a long series of bombing raids against Tokyo. Although capable of precision bombing at high altitudes, the Superfortresses began dropping incendiary devices from a mere 5,000 feet, firebombing the Japanese capital in an attempt to break the will of the Axis power. One raid, in March 1945, killed more than 80,000 people. But the most famous, or perhaps infamous, use of the B-29 would come in August, as it was the only plane capable of delivering a 10,000-pound bomb—the atomic bomb. The Enola Gay and the Bock’s Car took off from the Marianas, on August 6 and 9, respectively, and flew into history.

FACT CHECK: We strive for accuracy and fairness. But if you see something that doesn't look right, click here to contact us!

ALSO ON THIS DAY

Monarchy abolished in France

In Revolutionary France, the Legislative Assembly votes to abolish the monarchy and establish the First Republic. The measure came one year after King Louis XVI reluctantly approved a new constitution that stripped him of much of his power. Louis ascended to the French throne in ...read more

Benedict Arnold commits treason

On September 21, 1780, during the American Revolution, American General Benedict Arnold meets with British Major John Andre to discuss handing over West Point to the British, in return for the promise of a large sum of money and a high position in the British army. The plot was ...read more

Mao Zedong outlines the new Chinese government

At the opening of the Chinese People’s Political Consultative Conference in Peking, Mao Zedong announces that the new Chinese government will be “under the leadership of the Communist Party of China.” The September 1949 conference in Peking was both a celebration of the ...read more