Designated a National Cemetery by President Abraham Lincoln in 1862 along with eleven others, military graves date back to 1846.
Today, more than 20,000 veterans representing every war since 1812 are buried in the cemetery. Two soldiers from Operation Desert Storm were interred here in 1991.
The "DB," as it is known, was established as a military prison in 1873. The buildings inside date from 1863 to 1964. The DB is the only military maximum security facility.
This USDB closed in 2003 and the inmates were moved to the new USDB on the west side of the fort. The 'castle'