Mexican Revolution revolution was in 1914, during the "Ypiranga" incident. When United States intelligence agents received word that the "Ypiranga", a German merchant ship, contained illegal firepower for Huerta, President Wilson ordered American troops to the port of Veracruz to stop the ship from docking. Wilson never actually declared war on Mexico. The United States skirmished with Huerta's troops in Veracruz. The "Ypiranga" successfully docked at another port and unloaded the arms, which greatly angered Wilson. The ABC Powers arbitrated and U.S. troops left Mexican soil, but the incident added to already tense Mexican-American relations. In 1916, in retaliation for Pancho Villa's
US signals intelligence in the Cold War current status is uncertain. Spruance-class destroyers sailed on collection missions in the Black Sea, Baltic Sea, and off the coast of Libya, a Soviet client. UN peacekeepers deployed to Beirut in 1983, with US 1st Battalion 8th Marines, which lost 241 men, in the bombing that also killed 58 French paratroopers of 3rd Company of the 6th Parachute Infantry Regiment. SIGINT teams were attached to the Marine force there. Unfortunately, SIGINT had little role to play in the force protection problem. Western hostages were a major concern to the US and UK. The US approach was the Iran-Contra Affair arms-for-hostages