Fort Ruger

Fort Ruger is a fort on the island of Oʻahu that served as the first military reservation in the Territory of Hawaii. Named after Civil War General Thomas H. Ruger and built in and around Diamond Head Crater, the fort was established by the United States in 1909 for the purpose of defending the harbor of its newly annexed territory. Fort Ruger was the site of Battery Harlow, armed with eight 12-inch mortars. The fort's prominent location on Diamond Head made it a natural fire control station, with several posts built into Leahi Peak. Despite being listed on the National Register of Historic Places, portions of the site are still used for training by the Hawaii National Guard. Few of the original buildings survive. The most striking are...