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.
Input: Context : Solomon Meredith (May 29, 1810 -- October 2, 1875) was a prominent Indiana farmer, politician, and lawman who was a controversial Union Army general in the American Civil War.
Answer : Union Army
Output:
What army did Solomon Meredith serve in?