ministry of technology

  1. robunos

    The 'AB.123' project designation system...

    I've done a search. and I'm surprised that there's no thread for this... Following the partial replacement, in 1959, of the British Ministry of Supply by the Ministry of Aviation, the iconic 'Rainbow Code' system for projects was also replaced, by a new system of two letters, and three numbers...
    • robunos
    • Thread
    • 1960s 1970s air ministry cold war late 1950s ministry of aviation ministry of defence ministry of technology united kingdom war office
    • Replies: 18
    • Forum: Designation Systems
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