"Ulysses S. background" is a bit ambiguous. Are you asking about:
* Ulysses S. Grant's background? This could refer to his family, upbringing, education, military career, or political career.
* The background of the character Ulysses in Homer's Odyssey? This would involve his origins, role in the Trojan War, and adventures on his journey home.
* The background of the novel Ulysses by James Joyce? This would involve its historical context, literary influences, and themes.
Please provide more context so I can answer your question accurately.