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 : Joseph Bloomfield Leake (April 1, 1828 -- June 1, 1918) was an attorney and an Iowa State Senator who entered the Union Army during the American Civil War.
Answer : Union Army
Solution:
What military branch is Joseph Bloomfield Leake?