Emergency Government Headquarters is the name given for a system of nuclear fallout shelters built by the Government of Canada in the 1950s and 1960s as part of continuity of government planning at the height of the Cold War. Situated at strategic locations across the country, the largest of these shelters are popularly referred to as "Diefenbunkers", a nickname coined by federal opposition politicians during the early 1960s. The nickname was derived from the last name of the Prime Minister of the day, John Diefenbaker, who authorized their construction. Over fifty facilities were built along several designs for various classes of service.
Canadian Forces Station Debert was a Canadian Forces station located in Debert, Nova Scotia. It was most recently used during the Cold War as a communications facility and was home to a "Regional Emergency Government Headquarters" (REGH) complex, more commonly known by their nickname "Diefenbunker."
The Diefenbunker, formerly known by its military designation, Canadian Forces Station Carp (CFS Carp), is a large underground four-storey reinforced concrete bunker and nuclear fallout shelter located in the rural area of Carp, Ontario approximately 30 km (19 mi) west of downtown Ottawa. Between 1957 and 1961, during the Cold War the Government of Canada led by then Prime Minister John Diefenbaker authorized the Diefenbunker to be designed and built as the Central Emergency Government Headquarters (CEGHQ Carp) in an attempt to ensure the continuity of government subsequent to a nuclear weapons attack by the Soviet Union. In 1994, CFS Carp was decommissioned and closed.
A Canadian Forces base or CFB is a military installation of the Canadian Armed Forces. For a facility to qualify as a Canadian Forces base, it must station one or more major units.
Ottawa/Carp Airport or Carp Airport is located 1.2 nautical miles south of Carp, Ontario, Canada, a small village that is now part of Ottawa. Carp is the only airport in the Ottawa area where private hangar space is readily available, so it is a popular home base for local general aviation pilots.
Carp is a compact rural community in West Carleton-March Ward in the City of Ottawa, Ontario, Canada, located in the northwestern portion of the municipality on the Carp River. It is about 33 km (21 mi) from downtown Ottawa. Prior to amalgamation in 2001, Carp was located in the West Carleton Township.
Canadian Forces Station Leitrim, also referred to as CFS Leitrim, is a Canadian Forces Station located in the neighbourhood of Leitrim in Ottawa, Ontario. It is concerned with the interception, decrypting and processing of communication for the Communications Security Establishment and the Canadian Forces, and forms part of the ECHELON system.
Naval Radio Section Aldergrove, or NRS Aldergrove, is a Canadian Forces naval radio communications facility located in both Aldergrove and Matsqui, British Columbia.
Canadian Forces Station Cobourg was a military logistics base located in Cobourg, Ontario.
Canadian Forces Station Armstrong is a former General Surveillance Radar station. It is located 1.1 miles (1.8 km) east of Armstrong, Thunder Bay District, Ontario. It was closed in 1974.
Canadian Forces Station Lowther is a closed General Surveillance Radar station. It is located 12.7 miles (20.4 km) east-southeast of Mattice-Val Côté, Ontario. It was closed in 1987.
Naval Radio Section Newport Corner is a Canadian Forces naval radio station located in Brooklyn, Nova Scotia. Founded in 1942, it is still in operation today but remotely controlled from CFB Halifax.
Canadian Forces Station Mill Cove is a former Canadian Forces Station and currently a naval radio station located near Hubbards, Nova Scotia. Built in 1967, it is remotely operated by the Canadian Forces from CFB Halifax.
Ouvrage Kerfent is a lesser work of the Maginot Line. Located in the Fortified Sector of Faulquemont, the ouvrage consists of three infantry blocks and an observation block, and is located between petits ouvrages Mottemberg and Bambesch, facing Germany. During the Battle of France, Kerfent was attacked by German forces, who captured the position from the rear after a short assault with artillery support. The combat blocks were heavily damaged. During the Cold War, limited repairs were made to allow the underground facilities to be occupied. Between 1958 and 1961 the site was used by the Royal Canadian Air Force as a microwave communications relay station. In the 1970s the ouvrage was sold to the commune of Zimming. The ouvrage is now flooded.
Canadian Forces Station Ramore is a closed General Surveillance Radar station. It is located 4 miles (6.4 km) east of Ramore, Ontario. It was closed in 1974. It was operated as part of the Pinetree Line network controlled by NORAD. It has since been sold and is now private property.
Canadian Forces Station Masset was a Canadian Forces station and signals intercept facility located near Masset, British Columbia. The station was officially stood-down on 1 April 1997 and re-established as Canadian Forces Station Leitrim Detachment Masset.
The Burnt Lands is an alvar between Almonte and Ottawa near Upper Huntley, Ontario, Canada. It probably obtained its name from one of the forest fires that swept the area during early European settlement.
The CFS Carp Richardson Detachment was a military operated radio communications transmitter station linked by landline to CFS Carp located off Lanark County Road 10 East of Perth, Ontario. The detachment was built with a hardened two story underground bunker built to accommodate the Signals personnel needed to operate the transmitter in case of war, as well as a mess hall, sleeping quarters, offices, decontamination facilities, and its own power generation facilities. Its location was chosen to be far enough away from CFS Carp to ensure survivability in the case of a nuclear strike against CFS Carp, and to reduce the risk of interference from its twenty powerful radio transmitters.
The Almonte Detachment was a military-operated radio communications receiver station linked by land line to CFS Carp located in Burnt Lands alvar off Lanark County Road 49 East of Almonte, Ontario, Canada. A second antenna receiver site was located further east near Dunrobin, Ontario; the Dunrobin Detachment. Both of these sites were linked to CFS Carp Richardson Detachment, which was a remote-operated transmitting site. CFS Carp Almonte Detachment was unmanned and the location primarily used as a remote antenna farm. After the end of the Cold War, CFS Carp was decommissioned and the antenna site was no longer needed.
The following is a hierarchical outline for the Canadian Armed Forces at the end of the Cold War. It is intended to convey the connections and relationships between units and formations.
Canadian Army 
