“Roll Call”, Rock Island Prison Barracks
The Rock Island Arsenal Museum, Rock Island, Illinois, uniformed Soldiers in front, behind them prisoners are in formations by the barracks.
Using up Rebel powder
For more than 20 years after the end of the Civil War, guns were fired on Arsenal Island to mark sunrise and sunset, using gunpowder confiscated from the Confederate army during the war. The practice finally was discontinued on May 10, 1887, when the gunpowder ran out.
There are two cemeteries located on Rock Island Arsenal. One is the National Cemetery and contains over 18,000 federal soldiers. The other is Rock Island Confederate Cemetery and contains almost 2000 Confederate soldiers who died at Rock Island Prison.