In which war did "Cognac" claim 5 victories?
Karol Pniak:  Originally a pilot for the Polish Air Force in the September Campaign of 1939, he later flew with No. 32 Squadron of the Royal Air Force, during the Battle of Britain, where he was known by the nickname "Cognac." Karol Pniak:  Karol Pniak claimed five victories in the Battle.
i don't know