The Boeing B-29 Superfortress makes its maiden flight.

The **Boeing B-29 Superfortress** was one of the most advanced and important heavy bombers of the Second World War. Developed by Boeing for the United States Army Air Forces, it first flew in September 1942 and entered combat in 1944. The enormous four-engine aircraft was designed for long-range bombing missions and incorporated technology that was unusually sophisticated for its time, including pressurized crew compartments, remote-controlled defensive gun turrets, and powerful Wright R-3350 engines. With a wingspan of more than 43 metres and a maximum takeoff weight exceeding 60 tonnes, the B-29 could carry large bomb loads over thousands of kilometres.

The B-29 is particularly associated with the **Pacific War**, where its exceptional range allowed American forces to attack the Japanese home islands. Early missions were flown from bases in China, but the capture of the Mariana Islands provided much more effective bases on Guam, Saipan, and Tinian. From late 1944, hundreds of B-29s conducted bombing raids against Japanese cities and industrial centres. Under Major General Curtis LeMay, tactics shifted toward low-altitude nighttime attacks using incendiary bombs, including the devastating raid on Tokyo on 9–10 March 1945. B-29s were also used for reconnaissance, mining Japanese waters, and delivering supplies.

The aircraft became most famous for carrying the **atomic bombs that helped bring the Pacific War to an end**. On 6 August 1945, the B-29 *Enola Gay*, commanded by Colonel Paul Tibbets, dropped the uranium bomb *Little Boy* on Hiroshima. Three days later, *Bockscar*, commanded by Major Charles Sweeney, dropped the plutonium bomb *Fat Man* on Nagasaki. After World War II, the B-29 remained in service and saw extensive combat during the Korean War, although increasingly capable jet fighters made the large piston-engined bomber vulnerable. The B-29 was eventually replaced by newer aircraft such as the B-50 and jet-powered B-47 Stratojet, but its combination of range, size, technological innovation, and historic role made it one of the most significant military aircraft of the twentieth century.