31 Canadian Brigade Group (31 CBG; ) is part of the 4th Canadian Division, under the Canadian Army. It encompasses the southwestern portion of Ontario, and is headquartered in London, Ontario. The 31 CBG area of responsibility stretches from Hamilton to Windsor. The brigade has approximately 2,400 soldiers. Colonel Chris Brown, CD is Commander of 31 Canadian Brigade Group. The brigade sergeant-major is Chief Warrant Officer Mike Coit, CD. History Second World War 31st (Reserve) Brigade Group was created, within 1 Militia District, on 1 April 1942 when the reserve force in Canada was reorganized for the war. Like today, the formation consisted of part-time soldiers who were paraded and trained on evenings and weekends. The brigade group was closed down on 28 November 1945 and the headquarters itself closed on 8 June 1946. During its existence, the brigade group was headquartered in London, Ontario and it held the following organization: Canadian Infantry Corps 1st (Reserve) Battalion, The Middlesex and Huron Regiment 2nd (Reserve) Battalion, The Canadian Fusiliers (City of London Regiment) MG 2nd (Reserve) Battalion, The Essex Scottish Regiment 2nd (Reserve) Battalion, The Scots Fusiliers of Canada Canadian Armoured Corps 30th (Reserve) Reconnaissance Regiment (Essex Regiment (Tank)) Royal Canadian Artillery 31st (Reserve) Field Regiment, RCA Royal Canadian Engineers 7th/11th (Reserve) Field Company, RCE Royal Canadian Army Service Corps Brigade Group Company, 1st (Reserve) Divisional, RCASC Royal Canadian Army Medical Corps 24th (Reserve) Field Ambulance, RCAMC Royal Canadian Corps of Signals E and J sections, No.1 (Reserve) District Signals, RCCS Royal Canadian Ordnance Corps / Royal Canadian Electrical and Mechanical Engineers No.2 Group, No.2 (Reserve) Divisional Workshop, (RCOC) RCEME No.1 (Reserve) Light Aid Detachment (Type A), (RCOC) RCEME No.2 (Reserve) Light Aid Detachment (Type B), (RCOC) RCEME No.3 (Reserve) Light Aid Detachment (Type B), (RCOC) RCEME No.4 (Reserve) Light Aid Detachment (Type B), (RCOC) RCEME 1997 to Present 31 Canadian Brigade Group (CBG) was recreated on 1 April 1997, with its headquarters located in London, replacing the London Militia District (LMD). Resulting from a major restructuring of the army, it was established as one of ten reserve brigade groups organized across Canada. Brigade composition Overview 31 CBG is an infantry-focused reserve brigade comprising 12 units in addition to the brigade headquarters in London. These units are spread out over southern and south-western Ontario, in London, Sarnia, Windsor, Guelph, Hamilton, St. Thomas, Waterloo, Burlington, Stratford, Owen Sound, Barrie, Cambridge, Kitchener, and