William "Rip" Robertson (August 3, 1920 – December 1, 1970) was a highly respected Central Intelligence Agency (CIA) Case Officer in the 1950s, 1960s and 1970.
Robertson was born in Manard, Muskogee Co., Oklahoma on August 3, 1920 and attended Vanderbilt University before and after the war. During World War II he enlisted in the United States Marine Corps and served in the Pacific Theater as a Captain and served during the Korean War. He later entered the CIA in 1947 and served as a Paramilitary Operations Officer in their famed Special Activities Division.
In 1954 he was one of a handful of Paramilitary Case Officers assigned to the CIA Task Force charged by President Dwight D. Eisenhower with destabilizing the democratically elected government of Guatemalan President Jacobo Arbenz. This covert action operation was accomplished in a surprisingly easy manner through psychological warfare measures designed and managed by CIA propaganda and psy-ops experts David Phillips and Howard Hunt. From a secret radio transmitter located on Swan Island off the Honduran coast, Phillips and Hunt scripted and broadcast a steady and increasingly bellicose stream of false news reports from a so-called "insurgent radio station" that was supposedly located in the mountains of Guatemala. Meanwhile, Robertson and his colleagues brought a relatively small unit of armed and trained guerrillas into the countryside outside of Guatemala City to make loud but non-lethal demonstrations of force. The combination of alarmist false radio broadcasts and loud explosions detonated by Robertson in the countryside succeeded splendidly in convincing Arbenz and his troops that a large well-armed insurgent "army" was poised outside the capital preparing to attack at any moment. These efforts, punctuated by the fly-over of the capital by a couple of CIA-controlled fighter-bombers with Nicaraguan Air Force markings and dropping a couple of bombs, convinced Arbenz that his own pilots had defected to the anti-government insurgency and that his capital was about to fall. Arbenz hurriedly fled the country, thus accomplishing President Eisenhower's order with virtually no bloodshed.
In a subsequent Central American operation, a team of guerrillas led by Robertson mis-identified a British cargo ship for a Russian freighter at anchor in a Nicaraguan harbor that was thought to be en route to Cuba with arms and ordnance for Castro. Robertson's guerrillas mined the vessel, sinking it in the harbor and killing some British seamen, resulting in an international uproar and a diplomatic demarche' from London. Robertson accepted responsibility for the operation and although he was dismissed from the Agency by the Chief of the CIA's Western Hemisphere Division, Colonel J.C. King—reportedly on Eisenhower' orders—Robertson was never considered to be an outcast by his CIA colleagues.