Detailed Instructions: Generate a correct and concise answer for the question based on the words in the context.
Problem:Context : Parker F. Dunn (August 8, 1890 - October 23, 1918) was an American soldier serving in the United States Army during World War I who received the Medal of Honor for bravery.
Question : In which war/battle did Parker F. Dunn fight?
Solution:
World War I