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 : William Joseph Franks (1830 -- April 18, 1880) was a United States Navy sailor who received the Medal of Honor for his actions in the American Civil War.
Question : During which historic war was William Joseph Franks an officer?
Output:
American Civil War