The Calgary Highlanders played a dramatic role in shaping infantry training for the entire Canadian Army in the United Kingdom in late 1941 when officers of the regiment visited a "Battle Drill" training school conducted by the British 47th (London) Division and immediately seized on the new training.

The training itself was simply a system of creating routine drills to create instant reactions to common tactical situations in the field at the level of the infantry section. The leader of a group of ten soldiers could teach these drills on the parade square, then drill reactions into his men so that in the field, they became second nature.

The Londoners took the training to the next level, however, and Battle Drill Training became more than just simple drills. It incorporated physical hardening, battle indoctrination, exposure to live ammunition (including automatic weapons and high explosive fired at close range), visits to animal slaughterhouses, endurance marches, speed marches, obstacle courses, and other challenges both physical and mental.

There were critics of the training at all levels; some felt it became a crutch; others felt it prepared the Canadian Army to face the Germans. First World War veteran J. Fred Scott, promoted to Colonel, took Battle Drill back to Canada where he became an instructor at a Battle Drill School in British Columbia. Command of the Calgary Highlanders, as per policy overseas, fell to a younger man.

Battalion Organization

The organizational structure of a Canadian infantry battalion was determined by a document known as a War Establishment which outlined the number of soldiers, their ranks/appointments, weapons and vehicles they were equipped with, etc. During the Second World War, there were several changes to the infantry battalion's W.E. before Normandy. The Calgary Highlanders landed in France organized as a battalion with four rifle companies, a support company with several specialist platoons, a headquarters company, and a total official complement of 37 officers and 811 other ranks.

Each rifle company had 5 officers and 122 men; battalion headquarters (containing command personnel, intelligence section, medical section, regimental police and orderly room) was authorized 5 officers and 45 men, HQ Company 5 officers and 93 men, and support company 7 officers and 185 men. As a highland unit, the Calgary Highlanders were also authorized six pipers (one a sergeant), over and above establishment. Snipers were concentrated in battalion HQ and one sniper was given the rank of sergeant – on the continent the battalions formed Scout & Sniper platoons under the command of an officer.

The number of soldiers holding specific ranks was:

Rank Distribution – War Establishment Cdn II/233/2

*13 Lance Sergeant appointments were permitted

**68 Lance Corporal appointments were permitted

A change to the W.E. permitted all rifle company commanders to be majors rather than just two of the four.

Weapons

With this establishment the PIAT (Projector, Infantry, Anti-Tank) completely replaced the .55 cal anti-tank rifle. Other weapons included:

Forty-eight of the battalion’s sixty-three bren guns were personal weapons. These were the thirty-six bren guns in the rifle sections and twelve of the thirteen bren guns in the carrier platoon. The remaining fifteen guns were not assigned to a specific individual. The 811 other ranks in the battalion were equipped with either one of the 595 .303 rifles, 160 machine carbines, eight .303 sniper rifles or 48 individually assigned bren guns. All 37 officers were armed with a .38-calibre pistol. Also not assigned to specific individuals were the 22 PIATs.

Universal Carrier

Vehicles The battalion was authorized 38 carriers (wheeled and tracked), 81 motorized vehicles, 33 bicycles and one 20-cwt water trailer. Thirteen universal carriers were allocated to the carrier platoon and one each to battalion headquarters, the anti-tank platoon and the 4 rifle company headquarters. The majority of vehicles were built in Canada, and some were of Canadian design – the Canadian Military Pattern (CMP). Others were license built version of British or American vehicles.

Heavy Utility Pattern (HUP) truck

Rifle Company

The heart of the battalion's fighting strength was the four rifle companies, though all told they accounted for only about 60% of the battalion's manpower. Each rifle company headquarters had an officer commanding (Major) and a 2i/c (Captain). There was a company sergeant-major (WOII), a company quartermaster-sergeant (Staff-Sergeant), and two batman-drivers for the officers. For administration there was a clerk and a storeman and for messaging there were three orderlies each with a bicycle. There was a driver i/c and two driver mechanics (one of whom was a corporal). The company vehicles were a universal carrier, a 5-cwt car (jeep) and three 15-cwt trucks GS. The three rifle platoons in the company were commanded by lieutenants. The platoon headquarters consisted of the commander, a platoon sergeant, a batman for the officer, an orderly with a bicycle and a three man 2-inch mortar detachment under the command of a lance-corporal. Each rifle section consisted of a corporal in command, a lance-corporal 2i/c, a bren gunner and his assistant, and six riflemen for a total of 10. In combat the lance-corporal commanded the bren gun team and the corporal the rifle team.

Combined Arms

The infantry battalion in action fought as part of an infantry brigade; the Calgary Highlanders were brigaded with The Black Watch (Royal Highland Regiment) of Canada and Le Régiment de Maisonneuve. Attacks were generally made with heavy artillery support from the divisional artillery, and the regiment worked especially closely with the 5th Field Regiment, Royal Canadian Artillery. Tanks of the 2nd Canadian Armoured Brigade were also often called on to support attacks, and Vickers heavy machine guns and 4.2-inch mortars of the divisional machine gun battalion, The Toronto Scottish, were a frequently used asset as well.