- Sometimes (erroneously) referred to as the Ground Observation Corps.
World War II OrganizationEdit
The Ground Observer Corps was a World War II Civil Defense program of the United States Army Air Forces to protect against air attack. The 1.5 million civilian observers at 14,000 coastal observation posts used naked eye and binocular searches to search for German and Japanese aircraft until the program ended in 1944.
Cold War OrganizationEdit
The Ground Observer Corps was reformed during the Cold War as an organization of the United States Air Force Civil Defense network which provided aircraft tracking with over 200,000 civilian volunteers. The corps was established in early 1950 to supplement the Lashup Radar Network and a permanent radar network started with "ADC radar site" P-1 (McChord AFB) on June 1, 1950. "Filter centers" (e.g., in New Haven, Connecticut and Baltimore, Maryland) received telephoned voice information from 8,000 posts, and the information was relayed to Air Defense Command ground control interception centers.
By 1952 the program was expanded in Operation Skywatch with over 750,000 volunteers at over 16 thousand posts (98 per post in shifts) and 75 centers. The program ended in 1958  with the advent of the automated 1959 USAF radar network (SAGE) and the automated Army networks (Missile Master).
GOC volunteers were encouraged to continue their service in the Radio Amateur Civil Emergency Service (RACES).
- ↑ Morgan, Mark L; Berhow, Mark A (2002, second edition) (Google Books). Rings of Supersonic Steel. Hole in the Head Press. ISBN 0-615-12012-1. http://books.google.com/books?id=vagljMKPYrkC&pg=PA60. Retrieved 2011-09-13.
- ↑ 2.0 2.1 "Less Than Half Spotter Time Filled In Week" (Google News Archive). Times and News Publishing Company. April 5, 1954. http://news.google.com/newspapers?id=riYmAAAAIBAJ&sjid=Bf4FAAAAIBAJ&dq=round-hill%20gettysburg&pg=2238%2C4455496. Retrieved 2012-01-04.
- ↑ Winkler, David F (1997). Searching the skies: the legacy of the United States Cold War defense radar program. Prepared for United States Air Force Headquarters Air Combat Command.
- ↑ Schaffel, Kenneth (1991). The Emerging Shield: The Air Force and the Evolution of Continental Air Defense, 1945–1960. Washington, DC: Office of Air Force History. http://www.airforcehistory.hq.af.mil/Publications/Annotations/schaffelemerging.htm.
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