Complex sentence: In 1945, Aloisio went to Leavenworth Penitentiary in Leavenworth, Kansas for five years for helping a relative, perhaps his son, avoid conscription during World War II. Aloiso bribed U.S. Navy personnel in Chicago to make sure his relative failed his physical examination.
Split into simpler sentences: In 1945, Aloisio went to Leavenworth Penitentiary in Leavenworth, Kansas five years for aiding and abetting evasion of the wartime draft. A relative of Aloisio, perhaps his son, had been facing the draft during World War II. Aloiso bribed U.S. Navy personnel in Chicago to make sure his failed his physical examination.