You will be given a definition of a task first, then some input of the task.
Generate a correct and concise answer for the question based on the words in the context.

Context : Ramire Rosan (April 14, 1895 -- May 24, 2004) was the last World War I veteran from the overseas departments and territories of France.
Question : During which historic war was Ramire Rosan an officer?
Output:
World War I