The 61x96 ft (44 ft high) Art Deco facility was constructed as a $43,331 Works Projects Administration project[2] for the local National Guard unit (commanded by Lt Ralph C. Deitrick in 1933).

[1][3] The two-story building housed a garage and repair shop for military vehicles, a classroom, administrative space, and a drill hall.

[5] In 1944, the Gettysburg Armory was used as a temporary German Prisoner of War camp while the official camp was being constructed on the Gettysburg Battlefield.

In 2010, the building was vacated by Battery B, 1/108th Field Artillery after a new readiness center was constructed in South Mountain.

[7] In 2013, the Armory was transferred to the private sector by the Pennsylvania General Assembly.