Generate a correct and concise answer for the question based on the words in the context.

Input: Consider Input: Context : Karl-Wilhelm von Schlieben (30 October 1894 -- 18 June 1964) was a German officer in World War I and World War II. 
Question : Which war did Karl-Wilhelm von Schlieben participate in?

Output: World War I


Input: Consider Input: Context : John Hunt Morgan (June 1, 1825 -- September 4, 1864) was a Confederate general in the American Civil War. 
Question : Which war did John Hunt Morgan serve in?

Output: American Civil War


Input: Consider Input: Context : Lewis Heermann, born in Kassel, Germany, 3 August 1779 was commissioned Surgeon's Mate in the United States Navy 8 February 1802. 
Question : What army did Lewis Heermann serve in?


Output: United States Navy