Documents show the FBI created a “Plan C” during the Cold War, which could have been triggered in the event the US underwent a nuclear attack. It included putting the nation under martial law, rounding up “subversives,” and interning enemy diplomats.
The documents, acquired by transparency journalism organization MuckRock, detail the FBI plan created in 1956, which was shared with several top officials from every governmental department. The FBI also distributed papers regarding the plan to its field offices. The plan would have gone into effect “after a war has begun in which the US is involved or may become involved and prior to an actual attack on the US itself,” according to the documents.
Under Plan C, martial law would be declared and the FBI would enact its ‘Emergency Detention Program,’ which entailed apprehending individuals whose affiliations with subversive organizations “are so pronounced that their continued liberty in the event of a national emergency would present a serious threat to the internal security of the country.” The document shows that as of April 1956, almost 13,000 people “were scheduled for apprehension in an emergency.”
Government organizations would decide which of their employees were essential and have them hide out in backup offices. Soviet embassies, meanwhile, would be searched for weapons, radios, and explosives.
The documents also detail the ‘Internment of Enemy Diplomats,’ showing that the president would instruct enemy diplomats to be taken into protective custody, with the FBI assisting the Department of State.
“Soviet Block personnel who would be involved number about 500 persons in Washington, DC, and about 400 in New York,” the documents read. Enemy diplomats would be taken to detention hotels and held there by Immigration and Customs Enforcement under the state’s direction.