Also, future Admiral Charles Sigsbee, who commanded the USS Maine when it blew up in Havana Harbor, sparking the Spanish-American War, was there. Sigsbee was also at the Battle of Fort Fisher.
Another Spanish-American War hero, future Captain Charles Vernon Gridley who commanded the cruiser USS Olympia at the Battle of Manila Bay when Admiral Dewey gave the famous order, "You may fire when ready, Gridley," spent time at Fort Adams.
In 1862, Fort Adams was the headquarters and recruit depot for the 15th U.S. Infantry Regiment.
From August to October 1863, it was commanded by Brigadier General Robert Anderson, of Fort Sumter fame.
During World War II, it was part of the Harbor Defenses of Narrangansett Bay and at its peak had 3,000 troops.