Instructions: Generate a correct and concise answer for the question based on the words in the context.
Input: Context : Wadysaw Gnys (24 August 1910 -- 28 February 2000) was a Polish pilot of the Polish Air Force and probably the first Allied victor in aerial combat in World War II. In 1931, Wladyslaw Gnys entered military service with the Polish Air Force.
Question : Which armed forces utilised the service of Wadysaw Gnys?
Output:
Polish Air Force