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US Army Air Forces Training Film TF1-3360
Originally a public domain film from the US National Archives, slightly cropped to remove uneven edges, with the aspect ratio corrected, and one-pass brightness-contrast-color correction & mild video noise reduction applied.
The soundtrack was also processed with volume normalization, noise reduction, clipping reduction, and/or equalization (the resulting sound, though not perfect, is far less noisy than the original).
Wikipedia license: http://creativecommons.org/licenses/by-sa/3.0/
The North American B-25 Mitchell is an American twin-engine, medium bomber manufactured by North American Aviation (NAA). It was named in honor of Major General William "Billy" Mitchell, a pioneer of U.S. military aviation. Used by many Allied air forces, the B-25 served in every theater of World War II and after the war ended many remained in service, operating across four decades. Produced in numerous variants, nearly 10,000 Mitchells rolled from NAA factories. These included a few limited models, such as the United States Marine Corps' PBJ-1 patrol bomber and the United States Army Air Forces' F-10 reconnaissance aircraft and AT-24 trainers...
...The Air Corps issued a specification for a medium bomber in March 1939: 2,400 lb (1,100 kg) over 1,200 mi (1,900 km) at 300 mph (480 km/h) NAA used the NA-40B design to develop the NA-62 which competed for the medium bomber contract. There was no YB-25 for prototype service tests. In September 1939, the Air Corps ordered the NA-62 into production as the B-25, along with the other new Air Corps medium bomber, the Martin B-26 Marauder "off the drawing board"...
The majority of B-25s in American service were used in the war against Japan in Asia and the Pacific. The Mitchell fought from the Northern Pacific to the South Pacific and the Far East. These areas included the campaigns in the Aleutian Islands, Papua New Guinea, the Solomon Islands, New Britain, China, Burma and the island hopping campaign in the Central Pacific. The aircraft’s potential as a ground-attack aircraft emerged during the Pacific war. The jungle environment reduced the usefulness of medium-level bombing, and made low-level attack the best tactic. Using similar mast height level tactics and skip bombing, the B-25 proved itself to be a capable anti-shipping weapon and sank many enemy sea vessels of various types. An ever-increasing number of forward firing guns made the B-25 a formidable strafing aircraft for island warfare. The strafer versions were the B-25C1/D1, the B-25J1 and with the NAA strafer nose, the J2 sub-series.
In Burma, the B-25 was often used to attack Japanese communication links, especially bridges in central Burma. It also helped supply the besieged troops at Imphal in 1944. The China Air Task Force, the Chinese American Composite Wing, the First Air Commando Group, the 341st Bomb Group, and eventually, the relocated 12th Bomb Group, all operated the B-25 in the China Burma India Theater (CBI). Many of these missions involved battle field isolation, interdiction and close air support.
Later in the war, as the AAF acquired bases in other parts of the Pacific, the Mitchell could strike targets in Indochina, Formosa and Kyushu, increasing the usefulness of the B-25. It was also used in some of the shortest raids of the Pacific War, striking from Saipan against Guam and Tinian. The 41st Bomb Group used it against Japanese-occupied islands that had been bypassed by the main campaign, such as happened in the Marshall Islands...
Middle East and Italy
The first B-25s arrived in Egypt and were carrying out independent operations by October 1942. There operations against Axis airfields and motorized vehicle columns supported the ground actions of the Second Battle of El Alamein. From there, the aircraft took part in the rest of the campaign in North Africa, the invasion of Sicily and the advance up Italy. In the Strait of Messina to the Aegean Sea the B-25 conducted sea sweeps as part of the coastal air forces. In Italy, the B-25 was used in the ground attack role, concentrating on attacks against road and rail links in Italy, Austria and the Balkans. The B-25 had a longer range than the Douglas A-20 Havoc and Douglas A-26 Invaders, allowing it to reach further into occupied Europe. The five bombardment groups – 20 squadrons – of the Ninth and Twelfth Air Forces that used the B-25 in the Mediterranean Theater of Operations were the only U.S. units to employ the B-25 in Europe...