6. Defence of Canada Operations 1960-70
The Mobile Striking Force, as a formation, ceased to exist by the 1960s.
The continental defence commitment, however, still existed though the threat
estimate had changed. The concern now was that, given the adoption of a
strategic concept in which conventional operations were possible prior to the
outbreak of nuclear war, the Soviets might attempt to use small airborne,
trawler, or submarine-landed special forces to destroy vital installations. The
target installations were extremely vital for the defence of North America in
an all-out nuclear war. They included nuclear weapon storage sites housing
anti-bomber rockets and missiles like CFB Comox, BC; underwater listening
SOSUS installations like CFS Shelburne, Nova Scotia; or radar and air
defence control stations like CFS Holberg, BC.
Instead of having a MSF-like formation, the Army, and later Mobile
Command, tasked each brigade group based in Canada to develop and
exercise contingency plans for independent battalion group-level Defence of
Canada Force (DCF) operations.
One of the first DCF exercises was Ex BOAT CLOAK held in 1963. BOAT
CLOAK involved 1st Battalion, Royal Highland Regiment of Canada (the
Black Watch), a detachment from the Royal Canadian Engineers, and two
troops from the RCD Recce Squadron. Two ASW destroyers, Terra Nova and
Chaudiere, along with the destroyer HMCS Buckingham, moved the
composite force from Halifax, conducted a small-scale ASW exercise first, and
then headed for Cape Breton. Several small recce parties were landed by boat
several days before the main landing force went in under cover of naval
gunfire support.50
On the west coast, there was Exercise CANLEX 64. 1st Battalion, Queen's
Own Rifles of Canada was tasked by Mobile Command through 1 Brigade to
develop a plan to protect or retake CFS Holberg, the western-most end of one
cross-Canada air defence radar line. Two officers, one with Royal Marines
assault training and another who was a graduate of the U.S. Army Ranger
course, were put in charge of a 180-man composite company group. The unit
trained for eight months. Starting from scratch, a Joint Operations Centre
was established with Maritime Command forces at HMCS Dockyard in
Victoria. Boarding, embarkation, and disembarkation drills were developed,
and a composite beach party was formed. Soldiers and sailors who had D-Day
experience assisted and even produced old doctrinal manuals.51
The DCF Company Group then boarded four Ocean Escorts (converted
minesweepers) for the exercises. Tactical air support was provided by T-33's
based out of CFB Comox. Naval gunfire support was also used. The DCF
company group then tracked down the enemy landing force, raided its base
camp, and successfully protected the radar station.52
The amphibious exercises continued annually on each coast throughout
the 1960s. These included Exercise MOHAWK (1964) held at CFS Shelburne
(a SOSUS terminal). MOHAWK included six destroyers, submarines, and
patrol aircraft as well as a company group. YEOMAN (1964) was held at
Argentia, Newfoundland where the U.S. Navy had a SOSUS station and a
nuclear weapons storage site. YEOMAN included nine Prestonian-class
frigates, a diving support vessel with divers, and the Operational Support
Ship (AOR) HMCS Provider with her helicopters and landing craft (assault).
A composite company group drawn from 1st Bn, The Black Watch as well as
several T-33 ground support aircraft participated. Similarly, Exercise
SOCKEYE employed three destroyers, another Queen's Own Rifles company
group in a mission to CFS Masset, a signals intelligence station located in the
Queen Charlotte Islands.53
Exercise POOL SHARK I and II (September/October 1970): Held on the
west coast of Vancouver island, an infantry battalion with naval gunfire
support teams boarded the ASW destroyer HMCS Mackenzie and the
minesweepers HMCS Fundy and Chignecto to 'eliminate' and enemy
lodgment near Bamfield, a communications station.54
Exercise POTLATCH (September 1974): Another northern Vancouver
Island operation, POTLATCH was a joint Canada-US exercise involving a
Canadian infantry battalion and a USMC battalion. The Canadian force was
transported by the operational support ship HMCS Provider and the ASW
destroyers HMCS Restigouche and Gatineau. The Marines were lifted by the
landing ships USS Mount Vernon and Barber County. HMCS Rainbow, a
Canadian submarine, opposed the amphibious force while in transit to the
landing area.55
Exercise KERNAL POTLACH II (September 1979): KERNAL POTLATCH
II was an even bigger version of POTLATCH and was probably the largest
amphibious exercise held on the Canadian west coast. A Canadian infantry
battalion group married up with a Marine Amphibious Unit in California for
joint exercises. The land forces were then supported by, in the Canadian case,
the operational support ship HMCS Provider and the ASW destroyers HMCS
Gatineau, Terra Nova, and Restigouche, while the Americans were loaded
into the landing ships USS Alamo, Cleveland, Mobile, Anchorage, and New
Orleans. The second phase of the exercise was a transit to Vancouver Island
while the escort vessels warded off enemy submarines and aircraft, played by
Maritime Air Command Argus and USN P-3 maritime patrol aircraft and
Air Command CF-100 electronic warfare aircraft based at CFB Comox. The
amphibious force was screened by nine USN cruisers and destroyers,
including USS Long Beach, and an undisclosed number of nuclear
submarines.56