Definition: Generate a correct and concise answer for the question based on the words in the context.
Input: Context : Horst Rudat (born 3 May 1920 in Wirtkallen, district Insterburg, East Prussia; died 31 August 1982 in Laaber/Waldelzerberg) was a German World War II Luftwaffe bomber pilot. 
Question : In which war did Horst Rudat serve?
Output:
World War II