You're right, Kiwi Ace - actually, during the war, a lot of publicity was given to the 'men from the domions' etc who flew with the RAF.
This was an important morale-builder for the public to show that Britain wasn't 'alone'.
Since the war, too, serious books about the airwar have given due credit to all nations who flew with the RAF ( not just in fighters ). The film 'Battle of Britain' also made the fact clear.
( And don't forget Les Munro, pilot on the Dams Raid !

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