Description: Fort Casey was built about 1908. Over the next several years, the fortifications were supplemented by newer batteries with guns on disappearing carriages, which could be raised out of their protective emplacements so that the guns were exposed only long enough to fire. In addition, more advanced rapid-fire gun batteries were added. The fort's batteries became obsolete almost as soon as they were finished. Battleships were designed with increasingly bigger and more accurate guns, and the static strategies of the nineteenth century were replaced with more mobile attack systems in the twentieth century. Most of the guns and mortars were removed from the fort and sent to Europe during World War I, where they were mounted on railcars to serve as mobile heavy artillery.
In 1935, the Coast Artillery withdrew the station's battery assignments placed it on inactive status. As World War II approached, military officials reactivated the station after making physical improvements to the aging frame-plaster construction.