What famous prisoners were at Fort Leavenworth?

Fort Leavenworth, a maximum-security military prison in the United States, has housed several famous prisoners in its history. Among them were Will West and his look-alike brother, William West, who caused a sensation in 1903 due to their identical appearances, leading to the adoption of fingerprint records in the prison system. However, the most notable prisoners at Fort Leavenworth were those discussed in the political debate surrounding the proposed transfer of detainees from Guantanamo Bay, although such a transfer never actually occurred.