Sidney Cotton’s work found only grudging approval with the Royal Air Force, but eventually his work was incorporated into 1 Photographic Development Unit (PDU) at RAF Heston and then RAF Benson, a unit from which most later British air reconnaissance developed.
•
At that point the Wing had found the F-4 unsatisfactory, the F-7 or B-17 Fortress unable to survive over enemy territory, and the new British de Havilland Mosquito to be the most promising reconnaissance platform.
•
The extensive O-series of aircraft, such as the Douglas O-38 and its descendants, were typically low and slow and used for direct Army liaison, artillery spotting, and observation.
American Civil War | Vietnam War | American Revolutionary War | World Cup | Cold War | Iraq War | FIFA World Cup | World Trade Center | World Series | War of 1812 | Spanish Civil War | 2010 FIFA World Cup | World Bank | World Health Organization | Korean War | Guinness World Records | 1978 FIFA World Cup | World Series of Poker | Allies of World War II | English Civil War | BBC World Service | Gulf War | ATP World Tour 250 series | Franco-Prussian War | World Heritage Site | World Boxing Association | World Boxing Council | 2006 FIFA World Cup | Pacific War | war |