1st Canadian Infantry Brigade

1st Canadian Brigade 1st Canadian Infantry Brigade
Active	1914–1919 1939–1945
Country	Canada
Branch	Canadian Army
Type	Infantry
Size	Brigade
Part of	1st Canadian Division
Engagements	World War I Second Battle of Ypres Battle of the Somme Battle of Vimy Ridge Battle of Passchendaele World War II Invasion of Sicily Italian campaign
Commanders
Notable commanders	Malcolm Mercer William Antrobus Griesbach

The 1st Canadian Infantry Brigade was a Canadian Army formation that served with the 1st Canadian Division in World Wars I and II. In 1953 it was reformed in Germany to become the 1 Canadian Mechanized Brigade Group in 1992.

William Antrobus Griesbach commanded the brigade in 1918.

Order of Battle

World War I

• 1st Canadian Battalion (Ontario Regiment), CEF. August 1914 – November 11, 1918;
• 2nd Canadian Battalion (Eastern Ontario Regiment), CEF. August 1914 – November 11, 1918;
• 3rd Canadian Battalion (Toronto Regiment), CEF. August 1914 – November 11, 1918;
• 4th (Central Ontario) Battalion, CEF. August 1914 – November 11, 1918.

World War II

• Headquarters, 1st Infantry Brigade, C.A.S.F.
• 1st Battalion, The Royal Canadian Regiment, C.A.S.F.
• 1st Battalion, The Hastings and Prince Edward Regiment, C.A.S.F.
• 1st Battalion, The 48th Highlanders of Canada, C.A.S.F.
• 1st Infantry Brigade Ground Defence Platoon (Lorne Scots), C.A.S.F. (Added 6 February 1941)
• 1st Infantry Anti-Tank Company, C.A.S.F. (Deleted 5 February 1941)

Post-1945

The brigade was re-established on 14 October 1953 in Europe.

• 1st Canadian Infantry Brigade created 14 October 1953
• Redesignated 1st Canadian Infantry Brigade Group in October 1955
• Redesignated 1 Combat Group in 1972
• Redesignated 1 Canadian Brigade Group in 1976
• Redesignated 1 Canadian Mechanized Brigade Group in 1992

Brigade Commanders during the Second World War

• Brigadier A.A. Smith: 17 October 1939 – 19 October 1940 (Wounded in car accident)
• Lieutenant Colonel V. Hodson: 20 October – 26 November 1940 (Acting Commander)
• Lieutenant Colonel J.B. Stevenson: 27 November – 29 December 1940 (Acting Commander)
• Lieutenant Colonel L.T. Lowther: 30 December 1940 – 21 February 1941 (Acting Commander)
• Brigadier J.H. Roberts: 22 February – 15 July 1941
• Lieutenant Colonel W.W. Southam: 16 – 30 July 1941 (Acting Commander)
• Brigadier R.F.L. Keller: 31 July 1941 – 7 September 1942
• Brigadier G.G. Simonds: 8 September 1942 – 14 January 1943
• Brigadier H.D. Graham: 15 January – 17 December 1943
• Brigadier D.C. Spry: 18 December 1943 – 12 July 1944
• Brigadier J.A. Calder: 13 July – 8 December 1944
• Brigadier J.D.B. Smith: 9 December 1944 – 2 June 1945
• Lieutenant Colonel G.E.B. Renison: 3 June – 15 September 1945 (Disbanded) (Acting Commander)