Major General William Rosecrans was a Union general during the American Civil War, known for his leadership in several key battles. Born on September 6, 1819, in Delaware, New Jersey, he graduated from the United States Military Academy in 1842. Rosecrans initially served in the Mexican-American War and later became a successful engineer and inventor. Rosecrans gained prominence for his role in the Battle of Stones River and the Battle of Chattanooga, where his strategic skills were evident. Despite facing challenges, including setbacks at the Battle of Chickamauga, he remained a significant figure in the Union Army until the war's end.