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Examples of different code letter arrangements on the same side of different Spitfires: TO-O of No 61 Operational Training Unit,

Wartime codes

Q In the September issue, David Corbin queried the rules, if any, that governed the format of RAF squadron code letters during World War Two.

A There were indeed orders relating to the identifying letters applied to aircraft and Stephen Turner says, “These can be found in AMO A154/39 dated 27 April 1939. Paragraph 4ii orders the display of squadron and aircraft codes either side of the roundel, but allows the codes to be displayed in any order. Different squadrons could therefore have different layouts of the code.”

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