The 4th Canadian Division refers to two organizations raised during the 20th Century. This article refers to the division raised as a formation in the First World War.

The 4th Canadian Division was formed in the United Kingdom in Apr 1916. The formation embarked for France in Aug 1916, during the actions on the Somme. The Division served in France and Flanders thereafter until the Armistice.

The Division began to prepare for the historic assault on Vimy Ridge, and took the left flank of the Canadian Corps on 9 Apr 1917 when the assault went in. Stiff fighting on the 4th Division front led to heavy casualties, and some German positions managed to hold out from the 4th Division for three days.

The Division participated in the monumental battle of Hill 70 in Aug 1917 with Passchendaele following in mid-October, and into November.

Order of Battle

10th Canadian Brigade
	44th (Manitoba) Battalion. Re-designated New Brunswick in Aug 1918.	Apr 1916 - 11 Nov 1918
	46th (South Saskatchewan) Battalion	Apr 1916 - 11 Nov 1918
	47th (British Columbia) Battalion. Re-designated West Ontario in Feb 1918.	Apr 1916 - 11 Nov 1918
	50th (Calgary) Battalion	Apr 1916 - 11 Nov 1918
11th Canadian Brigade
	54th (Kootenay) Battalion	Apr 1916 - 11 Nov 1918
	75th (Mississauga) Battalion	Apr 1916 - 11 Nov 1918
	87th (Canadian Grenadier Guards) Battalion	Jun 1916 - 11 Nov 1918
	102nd (North British Columbia) Battalion	Apr 1916 - 11 Nov 1918
12th Canadian Brigade
	38th (Ottawa) Battalion	Jun 1916 - 11 Nov 1918
	51st (Edmonton) Battalion. Became the 51st Garrison Bn.	Apr 1916 - 13 Nov 1916
	72nd (Seaforth Highlanders) Battalion	Apr 1916 - 11 Nov 1918
	73rd (Royal Highlanders) Battalion . Disbanded.	Apr 1916 - 19 Apr 1917
	78th (Winnipeg Grenadier) Battalion	Apr 1916 - 11 Nov 1918
	85th (Nova Scotia Highlanders) Battalion	Apr 1917 - 11 Nov 1918
	87th (Canadian Grenadier) Battalion. To the 11th Canadian Brigade.	Apr 1916 - Jun 1916

Pioneers

4th Canadian Pioneer Bn. 15 May 1916 - Apr 1917. Disbanded.
124th Canadian Pioneer Bn. Mar 1917 - Jun 1917. To the 4th Canadian Engineer Brigade.

Canadian Machine Gun Corps

In early 1918, infantry machine gun companies were consolidated into Machine Gun Battalions, one per division. At first the battalion had three companies, and in May 1918 this increased to four, with a total complement of 96 Vickers Guns.

10th Machine Gun Company

11th Machine Gun Company

12th Machine Gun Company

16th Machine Gun Company

Militia Regiment Parentage

The following is a list of the Militia Regiments in Canada that provided soldiers for the numbered infantry battalions.

10th Canadian Brigade	44th (Manitoba/New Brunswick) Battalion.	67th Regiment (Carleton Light Infantry)
	46th (South Saskatchewan) Battalion	60th Rifles of Canada 95th Saskatchewan Rifles
	47th (British Columbia/West Ontario) Battalion.	104th Regiment (Westminster Fusiliers of Canada)
	50th (Calgary) Battalion	103rd Regiment (Calgary Rifles)
11th Canadian Brigade	54th (Kootenay) Battalion
	75th (Mississauga) Battalion	Toronto area
	87th (Canadian Grenadier Guards) Battalion	1st Regiment (Canadian Grenadier Guards)
	102nd (North British Columbia) Battalion	68th Regiment (Earl Grey's Own Rifles)
12th Canadian Brigade	38th (Ottawa) Battalion	42nd Lanark and Renfrew Regiment 59th Stormont and Glengarry Regiment 43rd Regiment (The Duke of Cornwall's Own Rifles)
	51st (Edmonton) Battalion.	101st Regiment (Edmonton Fusiliers)
	72nd (Seaforth Highlanders) Battalion	72nd Regiment (Seaforth Highlanders of Canada)
	73rd (Royal Highlanders) Battalion. Disbanded.	5th Regiment (Royal Highlanders of Canada)
	78th (Winnipeg Grenadier) Battalion	100th Winnipeg Grenadiers
	85th (Nova Scotia Highlanders) Battalion	95th Victoria Regiment (Argyll Highlanders)
	87th (Canadian Grenadier) Battalion.	1st Regiment (Canadian Grenadier Guards)

Battles and Engagements

France and Flanders
Le Transloy 1-17 Oct 1916.
Ancre Heights 17 Oct-11 Nov 1916, including the capture of Regina Trench.
Ancre 13-18 Nov 1916.
Vimy 9-14 Apr 1917.
Actions South of the Souchez River. 3-25 Jun 1917.
Capture of Avion. 26-29 Jun 1917.
Hill 70 15-25 Aug 1917.
Passchendaele 26 Oct-10 Nov 1917.
Amiens 8-11 Aug 1918.
Actions near Damery. 15-17 Aug 1918.
Drocourt-Qu�ant 2-3 Sep 1918.
Canal Du Nord 27 Sep-1 Oct 1918.
Valenciennes. 1-2 Nov 1918, including the capture of Mont Houy.
Passage of the Grande Honelle. 5-7 Nov 1918.

Insignia

Beginning in mid-1916, the Division adopted a system of coloured Battle Patches which were worn on both sleeves of the Service Dress jacket as well as the greatcoat. A rectangle 2 inches tall by 3 inches wide in green was adopted to distinguish the 4th Division from other formations of the Canadian Corps. Coloured geometric shapes used in combination with the divisional patch distinguished individual formations, units and sub-units within the division. The markings were also seen painted on steel helmets, vehicles and used as road signs. The diagram below is a representative list only.