Detailed Instructions: Generate a question which can yield the answer mentioned in the input. Generated question must be answered by the answer provided in input, without using any extra knowledge.
Problem:Context : Charles B. McVay, Jr. (September 9, 1868 -- October 28, 1949) was an admiral in the United States Navy after World War I. In 1907--1909, After the cruise of the Great White Fleet, he commanded the tender, Yankton.
Answer : United States Navy
Solution:
What military branch was Charles B. McVay, Jr. in?