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  1. Copilot Answer
    Design and development

    The Mitsubishi A5M fighter was just entering service in early 1937, when the Imperial Japanese Navy started looking for its eventual replacement. On 5 October 1937, it issued "Planning Requirements for the Prototype 1… See more

    Operational history

    The first Zeros (pre-series of 15 A6M2) went into operation with the 12th Rengo Kōkūtai in July 1940. On 13 September 1940, the Zeros scored their first air-to-air victories when 13 A6M2s led by Lieutenant Saburo Shi… See more

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