Definition: Generate a correct and concise answer for the question based on the words in the context.
Input: Context : Karl Allmendinger (3 February 1891 -- 2 October 1965) was a German general of Infantry, serving during World War I and World War II. He was also a recipient of the Knight's Cross of the Iron Cross with Oak Leaves.
Question : In which conflict did Karl Allmendinger participate?
Output:
World War I