Frederick Knefler
Frederick Knefler served in the Union Army in the U.S. Civil War, joining as a first lieutenant in May 1861 and mustering out as a Brevet Brigadier General on June 11, 1865.
Frederick Knefler was born in Arad, Hungary, son of Nathan Knoepfler, a Hungarian Jew and a physician. He enlisted with his father in the revolutionary forces during the 184849 Hungarian War of Liberation. After the revolutionary forces were defeated, the entire Knoepfler family fled to the United States, first to New York, then to Indianapolis, Indiana. As one of the earliest Jewish families settling in Indianapolis, Dr. Knoepfler was one of the original founders of the Indianapolis Hebrew Congregation.
Source: Wikipedia