Between 1890-1910, many coastal locations were refortified as part of the Endicott program. Three 6-inch disappearing guns were installed within the walls of Fort Gaines as a part of that program. This is a battery for two of those weapons, which were on the upper level of the structure.

Between 1890-1910, many coastal locations were refortified as part of the Endicott program. Three 6-inch disappearing guns were installed within the walls of Fort Gaines as a part of that program. This is a battery for two of those weapons, which were on the upper level of the structure.