Monte Majo, Anzio, Rome, Advance to the Tiber, Italy 1943–44, Southern France and Northwest Europe. The Canadians rejoined their home units and the Americans were assigned to either Airborne units or the newly formed 474th Infantry Regiment. Frederick became the youngest Major-General ever in the American army, at the age of 37, and took command of the 45th Division. The success, esprit and discipline of FSSF became a template for building modern special forces worldwide. Post-war parachute units In 1947, the Canadian Special Air Service Company was created with former members of the 1 Can Para and FSSF at its core. It was commanded by Major Guy D'Artois, a Canadian veteran of the Royal 22e Régiment, First Special Service Force and "F" Section Special Operations Executive. However, in 1950, Canada was once again mobilizing, this time for Korea and NATO Europe. Each of Canada's three traditional Regular Force regiments (The Royal Canadian Regiment, Princess Patricia's Canadian Light Infantry and Royal 22e Régiment) expanded to three battalions. A brigade commitment, consisting of airborne and air-delivered troops to defend Canada's North, was undertaken. Battalions of this Brigade were all airborne. It was structured, over the next 20 years, into the "Mobile Strike Force" and subsequently reduced in size to the "Defence of Canada Force". This parachute role, was switched from one battalion to another within each of Canada's regular infantry regiments, as they rotated to and from Korea and, subsequently, to Europe. The brigade's elements remained garrisoned in their respective bases across the country and seldom exercised as a complete brigade. Each of the battalions was trained to fly into Canada's North, and seize an airhead or location that could be developed for airlanded operations. When the role changed from one battalion to another, within each regiment, a small nucleus of specialized instructor-planners and riggers generally transferred over to the new battalion; however, the rest of the unit quickly undertook the requisite parachutist qualifications, generally with much enthusiasm; the requirement that parachutists be "volunteers" was rarely an issue in converting these tightly-knit infantry units. There were also airborne artillery, signals, medics, and engineer elements in the brigade. In 1958 the "Mobile Strike Force" was restructured as "The Defence of Canada Force", resulting in a reduction to one parachute company in each battalion. At this time the airborne artillery was disbanded and other support elements reduced. The parachute component in each battalion consisted