Alcatraz Island 1906 San Francisco earthquake, civilian prisoners were transferred to Alcatraz for safe confinement. On March 21, 1907, Alcatraz was officially designated as the Western U.S. Military Prison, later Pacific Branch, U.S. Disciplinary Barracks, 1915. In 1909 construction began on the huge concrete main cell block, designed by Major Reuben Turner, which remains the island's dominant feature. It was completed in 1912. To accommodate the new cell block, the Citadel, a three-story barracks, was demolished down to the first floor, which was actually below ground level. The building had been constructed in an excavated pit (creating a dry "moat") to enhance
Battle of Alcatraz was eventually released from prison in 1973. However, he breached his parole conditions, was sent back to prison and died there from complications from A.I.D.S. in 1988. Increased security measures ensured that there were no more escape attempts until 1956. Several versions of the events of the Battle of Alcatraz have been depicted on film: Battle of Alcatraz The Battle of Alcatraz, which lasted from May 2 to 4, 1946, was the result of an unsuccessful escape attempt at Alcatraz Federal Penitentiary. Two corrections officers—William A. Miller and Harold Stites—were killed along with three of the inmates. Eleven corrections officers