Fighter pilots have been practicing air combat maneuvering-dogfight-ing-since 1914. Most air forces have some kind of formal dogfight-ing instruction, and most fighter pilots do it on their own-frequently against regulations and often with casualties. It was not until the Vietnam War, however, that systematic air combat maneuver (ACM) training was introduced using aircraft with dissimilar performance Formal schooling was established for dissimilar air combat tactics after Vietnam, but it wasn't until the early 1990s that private firms were attracted to provide DACT as a commercial service.
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