Today Fort DeRussy is the U.S. Army Museum of Hawai’i. It was established in 1976 at Battery Randolph. The US Army Corps of Engineers bought the area in 1904 for $28,000 to build Battery Randoph and Battery Dudley (no longer extant) to 'defend' Honolulu Harbor.

The first test firing of Battery Randolph's guns took place in November, 1914. The Army says that it took pains to warn Waikiki residents but no one was fully prepared for the effects of the shock wave that rocked the neighborhood. Dishes rattled and windows cracked blocks away. To avoid damage in later years, as Waikiki was developed for the tourist industry, the guns were seldom fired.