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>Alcatraz
Originally a fort and then became a military prison.
Yes, Alcatraz Island was originally a fort and then became a military prison. It served as a fort from 1857 to 1907 and then became a military prison until 1933, according to the National Park Service. In 1934, it was transferred to the Federal Bureau of Prisons.
Here's a more detailed look at Alcatraz's history:
Military Fort (1857-1907):
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Alcatraz was established as a military fort to defend San Francisco Bay after the Mexican-American War.
Military Prison (1907-1933):
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The island transitioned into a military prison, with prisoners housed in a new building constructed in 1912.
Federal Prison (1934-1963):
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In 1933, the U.S. military transferred Alcatraz to the Department of Justice, and it became a federal penitentiary known as "The Rock".
Other Uses:
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Before and after its time as a fort and prison, Alcatraz was used for various purposes, including housing Confederate prisoners of war and private citizens accused of treason during the Civil War.
Alcatraz - BOP
From 1909 through 1911, the military prisoners on Alcatraz built the new prison, which was designated the Pacific Branch, U.S. Dis…
BOP
Fort Alcatraz - Wikipedia
Alcatraz was used to house soldiers who were guilty of crimes as early as 1859. By 1861, the fort was the military prison for the …
Wikipedia
The Captivating History of Alcatraz Island: From Military Fort to National Historic Landmark | GSA
May 18, 2020
GSA
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>Before and after its time as a fort and prison, Alcatraz was used for various purposes, including housing Confederate prisoners of war and private citizens accused of treason during the Civil War.