Tripoli. After securing an agreement from Algiers, Decatur demonstrated with his squadron at Tunis and Tripoli, where he secured indemnities for offenses during the War of 1812.
Spanish Florida. United States forces destroyed Nicholls Fort, called also Negro Fort, which harbored raiders making forays into United States territory.
Spanish Florida - First Seminole War. The Seminole Indians, whose area was a haven for escaped slaves and border ruffians, were attacked by troops under Generals Jackson and Gaines and pursued into northern Florida. Spanish posts were attacked and occupied, British citizens executed. In 1819 the Floridas were ceded to the United States.
Amelia Island (Spanish territory off Florida). Under orders of President Monroe, United States forces landed and expelled a group of smugglers, adventurers, and freebooters.
Oregon. The U.S.S. Ontario, dispatched from Washington, landed at the Columbia River and in August took possession of Oregon territory. Britain had conceded sovereignty but Russia and Spain asserted claims to the area.
Africa. Naval units raided the slave traffic pursuant to the 1819 act of Congress.
Cuba. United States naval forces suppressing piracy landed on the northwest coast of Cuba and burned a pirate station.
Cuba. Brief landings in pursuit of pirates occurred April 8 near Escondido; April 16 near Cayo Blanco; July 11 at Siquapa Bay; July 21 at Cape Cruz; and October 23 at Camrioca.
Cuba. In October the U.S.S. Porpoise landed bluejackets near Matanzas in pursuit of pirates. This was during the cruise authorized in 1822.
Puerto Rico (Spanish territory). Commodore David Porter with a landing party attacked the town of Fajardo which had sheltered pirates and insulted American naval officers. He landed with 200 men in November and forced an apology. Commodore Porter was later court-martialed for overstepping his powers.
Cuba. In March cooperating American and British forces landed at Sagua La Grande to capture pirates.
Greece. In October and November landing parties hunted pirates on the islands of Argenteire, Miconi, and Androse.
Falkland Islands. Captain Duncan of the U.S.S. Lexington investigated the capture of three American sealing vessels and sought to protect American interests.
Sumatra. February 6 to 9. A naval force landed and stormed a fort to punish natives of the town of Quallah Battoo for plundering the American ship Friendship.
Argentina. October 31 to November 15. A force was sent ashore at Buenos Aires to protect the interests of the United States and other countries during an insurrection.
Peru. December 10, 1835, to January 24, 1836, and August 31 to December 7, 1836. Marines protected American interests in Callao and Lima during an attempted revolution.
Mexico. General Gaines occupied Nacogdoches (Tex.), disputed territory, from July to December during the Texan war for independence, under orders to cross the “imaginary boundary line” if an Indian outbreak threatened.
Sumatra. December 24, 1838, to January 4, 1839. A naval force landed to punish natives of the towns of Quallah Battoo and Muckie (Mukki) for depredations on American shipping.
Fiji Islands. July. Naval forces landed to punish natives for attacking American exploring and surveying parties.
Instances of Use of United States Armed Forces Abroad, 1798-2010
Congressional Research Service