United States civil defense refers to the use of civil defense in the history of the United States, which is the organized non-military effort to prepare Americans for military attack and similarly disastrous events. Late in the 20th century, the term and practice of civil defense fell into disuse. Emergency management and homeland security replaced them.
History
Pre–World War
There is little known history of civil defense in the United States before the twentieth century. Since ancient times, cities typically built walls and moats to protect from invasion and commissioned patrols and watches to keep an eye out for danger, but such activities have not traditionally been encompassed by the term "civil defense." The US has a particular lack of early civil defense efforts because it was seldom threatened with a significant attack. Nonetheless, there are some early examples of what would today be considered civil defense. For example, as early as 1692, the village of Bedford, New York, kept on staff a drummer, whose responsibility was to sound the town drum in the event of a Native American attack—a very early precursor to the wailing sirens of the Cold War.
World War I
Civil defense truly began to come of age, both worldwide and in the United States, during the first World War—although it was usually referred to as "civilian defense". This was the first major total war, which required the involvement and support of the general population. Strategic bombing during World War I brought bombing raids by dirigibles and airplanes, with thousands of injuries and deaths. Attacks on non-combat ships, like the Lusitania, presented another threat to non combatants. The British responded with an organized effort which was soon copied in the US. This was formalized with the creation of the Council of National Defense on August 29, 1916. Civil defense responsibilities at the federal level were vested in this council, with subsidiary councils at the state and local levels providing additional support—a multi-level structure which was to remain throughout the history of United States civil defense.
As the United States had little threat of a direct attack on its shores, the organization instead "maintained anti-saboteur vigilance, encouraged men to join the armed forces, facilitated the implementation of the draft, participated in Liberty Bond drives, and helped to maintain the morale of the soldiers." This freedom to focus beyond air raid attacks gave United States civil defense a much broader scope than elsewhere. With the end of military conflict, the activities of the Council of National Defense were suspended. Thus, World War I marked the first time that organized civil defense was practised on a large scale in the United States. Although civil defense had not yet reached the scale and significance it soon would, many of the basic features were set in place.
World War II
World War II, which the United States entered after the attack on Pearl Harbor, was characterized by a significantly greater use of civil defense. Even before the attack, the Council of National Defense was reactivated by President Roosevelt and created the Division of State and Local Cooperation to further assist the Council's efforts. Thus, the civil defense of World War II began very much as a continuation of that of World War I. Very soon, however, the idea of local and state councils bearing a significant burden became viewed as untenable and more responsibility was vested at the federal level with the creation of the Office of Civilian Defense (OCD) within the Office of Emergency Planning (OEP) in the Executive Office of the President (EOP) on May 20, 1941. The OCD was originally headed by New York Mayor Fiorello La Guardia and was charged with promoting protective measures and elevating national morale.
These organizations and others worked together to mobilize the civilian population in response to the threat. The Civil Air Patrol (CAP), which was created just days before the attack on Pearl Harbor, commissioned civilian pilots to patrol the coast and borders and engage in search and rescue missions as needed. The Civil Defense Corps, run by the OCD, organized approximately 10 million volunteers who trained to fight fires, decontaminate after chemical weapon attacks, provide first aid, and other duties. A Ground Observer Corps watched for enemy aircraft.