Instances of Use of United States Armed Forces Abroad, 1798-2010
China. February. Fighting at Shanghai caused American naval forces and marines to be increased. In March a naval guard was stationed at the American consulate at Nanking after Nationalist forces captured the city. American and British destroyers later used shell fire to protect Americans and other foreigners. Subsequently additional forces of marines and naval vessels were stationed in the vicinity of Shanghai and Tientsin.
China. American forces were landed to protect American interests during the Japanese occupation of Shanghai.
Cuba. During a revolution against President Gerardo Machado naval forces demonstrated but no landing was made.
China. Marines landed at Foochow to protect the American Consulate.
Newfoundland, Bermuda, St. Lucia, Bahamas, Jamaica, Antigua, Trinidad, and British Guiana. Troops were sent to guard air and naval bases obtained by negotiation with Great Britain. These were sometimes called lend-lease bases.
Greenland. Greenland was taken under protection of the United States in April.
Netherlands (Dutch Guiana). In November the President ordered American troops to occupy Dutch Guiana, but by agreement with the Netherlands government in exile, Brazil cooperated to protect aluminum ore supply from the bauxite mines in Surinam.
Iceland. Iceland was taken under the protection of the United States, with consent of its government, for strategic reasons.
Germany. Sometime in the spring the President ordered the Navy to patrol ship lanes to Europe. By July U.S. warships were convoying and by September were attacking German submarines. In November, the Neutrality Act was partly repealed to protect U.S. military aid to Britain.
World War II. On December 8, 1941, the United States declared war with Japan, on December 11 with Germany and Italy, and on June 5, 1942, with Bulgaria, Hungary and Rumania. The United States declared war against Japan after the surprise bombing of Pearl Harbor, and against Germany and Italy after those nations, under the dictators Hitler and Mussolini, declared war against the United States. The U.S. declared war against Bulgaria, Hungary and Rumania in response to the declarations of war by those nations against the United States.
China. In October 50,000 U.S. Marines were sent to North China to assist Chinese Nationalist authorities in disarming and repatriating the Japanese in China and in controlling ports, railroads, and airfields. This was in addition to approximately 60,000 U.S. forces remaining in China at the end of World War II.
Trieste. President Truman ordered the augmentation of U.S. troops along the zonal occupation line and the reinforcement of air forces in northern Italy after Yugoslav forces shot down an unarmed U.S. Army transport plane flying over Venezia Giulia. Earlier U.S. naval units had been dispatched to the scene.
Palestine. A marine consular guard was sent to Jerusalem to protect the U.S. Consul General.
Berlin. After the Soviet Union established a land blockade of the U.S., British, and French sectors of Berlin on June 24, 1948, the United States and its allies airlifted supplies to Berlin until after the blockade was lifted in May 1949.
China. Marines were dispatched to Nanking to protect the American Embassy when the city fell to Communist troops, and to Shanghai to aid in the protection and evacuation of Americans.
Korean War. The United States responded to North Korean invasion of South Korea by going to its assistance, pursuant to United Nations Security Council resolutions. U.S. forces deployed in Korea exceeded 300,000 during the last year of the conflict. Over 36,600 U.S. military were killed in action.
Congressional Research Service