Egypt. After a Libyan plane bombed a city in Sudan on March 18, 1983, and Sudan and Egypt appealed for assistance, the United States dispatched an AWACS electronic surveillance plane to Egypt.
Honduras. In July 1983 the United States undertook a series of exercises in Honduras that some believed might lead to conflict with Nicaragua. On March 25, 1986, unarmed U.S. military helicopters and crewmen ferried Honduran troops to the Nicaraguan border to repel Nicaraguan troops.
Chad. On August 8, 1983, President Reagan reported the deployment of two AWACS electronic surveillance planes and eight F-15 fighter planes and ground logistical support forces to assist Chad against Libyan and rebel forces.
Grenada. On October 25, 1983, President Reagan reported a landing on Grenada by Marines and Army airborne troops to protect lives and assist in the restoration of law and order and at the request of five members of the Organization of Eastern Caribbean States.
Persian Gulf. On June 5, 1984, Saudi Arabian jet fighter planes, aided by intelligence from a U.S. AWACS electronic surveillance aircraft and fueled by a U.S. KC-10 tanker, shot down two Iranian fighter planes over an area of the Persian Gulf proclaimed as a protected zone for shipping.
Italy. On October 10, 1985, U.S. Navy pilots intercepted an Egyptian airliner and forced it to land in Sicily. The airliner was carrying the hijackers of the Italian cruise ship Achille Lauro who had killed an American citizen during the hijacking.
Libya. On March 26, 1986, President Reagan reported to Congress that, on March 24 and 25, U.S. forces, while engaged in freedom of navigation exercises around the Gulf of Sidra, had been attacked by Libyan missiles and the United States had responded with missiles.
Libya. On April 16, 1986, President Reagan reported that U.S. air and naval forces had conducted bombing strikes on terrorist facilities and military installations in Libya.
Bolivia. U.S. Army personnel and aircraft assisted Bolivia in anti-drug operations.
Persian Gulf. After the Iran-Iraq War resulted in several military incidents in the Persian Gulf, the United States increased U.S. joint military forces operations in the Persian Gulf and adopted a policy of reflagging and escorting Kuwaiti oil tankers through the Gulf. President Reagan reported that U.S. Navy ships had been fired upon or struck mines or taken other military action on September 23, October 10, and October 20, 1987 and April 19, July 4, and July 14, 1988. The United States gradually reduced its forces after a cease-fire between Iran and Iraq on August 20, 1988.
Panama. In mid-March and April 1988, during a period of instability in Panama and as pressure grew for Panamanian military leader General Manuel Noriega to resign, the United States sent 1,000 troops to Panama, to “further safeguard the canal, U.S. lives, property and interests in the area.” The forces supplemented 10,000 U.S. military personnel already in Panama.
Libya. On January 4, 1989, two U.S. Navy F-14 aircraft based on the U.S.S. John F. Kennedy shot down two Libyan jet fighters over the Mediterranean Sea about 70 miles north of Libya. The U.S. pilots said the Libyan planes had demonstrated hostile intentions.
Panama. On May 11, 1989, in response to General Noriega’s disregard of the results of the Panamanian election, President Bush ordered a brigade-sized force of approximately 1,900 troops to augment the estimated 11,000 U.S. forces already in the area.
Instances of Use of United States Armed Forces Abroad, 1798-2010
Congressional Research Service