Fighting

The 25th battalion was recruited in Nova Scotia (Halifax, Sydney, Yarmouth, Amherst and Truro) and mobilized in Halifax, Nova Scotia, with a strength of 42 officers and 1081 other ranks. The battalion embarked from from Halifax on 20 May 1915 on the troop ship Saxonia, and disembarked in the UK on 29 May, and arrived in France 15 September.

The 24th battalion was recruited and mobilized in Montreal, Quebec, with a strength of 42 officers and 1089 other ranks. The battalion embarked from Montreal on 11 May 1915, on the troop ship Cameronia, and disembarked in the UK on 20 May.

The 23rd battalion was recruited in Quebec, Montreal, Winnipeg, Calgary, Edmonton and Vancouver, and mobilized in Quebec City, Quebec, with a strength of 35 officers and 942 other ranks. The battalion embarked from Halifax on 23 February 1915, on the troop ship Missanabie, and disembarked in the UK on 7 March.

The 22nd battalion was recruited throughout the province of Quebec, and mobilized in St-Jean, Quebec, with a strength of 36 officers and 1097 other ranks. The battalion embarked from Halifax on 20 May 1915, on the troop ship Saxonia, and disembarked in the UK on 29 May, and arrived in France on 15 September.

The 21st battalion was recruited in Eastern Ontario, and mobilized in Kingston, Ontario, with a strength of 42 officers and 1053 other ranks. The battalion embarked from Montreal on 6 May 1915, on the troop ship Metagama, and disembarked in the UK on 15 May, and arrived in France on 14 Spetember.

The 20th battalion was recruited in in Aurora, Milton, Parry Sound, Owen Sound, Whitby, Barrie, Brampton, York, Simcoe, Niagara Falls, Dundas and Sudbury, and mobilized in Toronto, Ontario, with a strength of 35 officers and 1100 other ranks. The battalion embarked from Montreal on 15 May 1915, on the troop ship Megnatic, and disembarked in the UK on 24 May, and arrived in France on 14 September. 

The 19th battalion was recruited in Toronto, Hamilton, St. Catharines, Brantford, and Sault Ste Marie, and mobilized in Toronto, Ontario, with a strength of 41 officers and 1073 other ranks. The battalion embarked from Montreal on 13 May 1915, on the troop ship Scandinavian, and disembarked in the UK on 22 May, and arrived in France on 14 September.

the 18th battalion was recruited in London, Windsor, Woodstock, Chatham, St Thomas, Strathroy, Stratford, Galt, Guelph, Walkerville and Goderich, and mobilized in London, Ontario, with a strength of 36 officers and 1081 other ranks. The battalion embarked from Halifax on 18 April 1915, on the troop ship Grampian, and disembarked in the UK on 28 April, and arrived in France on 15 September.

The 17th battalion was organized at Camp Valcartier and composed of recruits from Nova Scotia and one company from Toronto, with a strength of 44 officers and 624 other ranks. The battalion embarked from Quebec on 30 September 1914, on the troop ship Ruthenia, and disembarked in the UK on 14 October.

The 16th battalion was organized at Camp Valcartier and composed of recruits from Victoria, Vancouver, Winnipeg and Hamilton, with a strength of 47 officers and 1111 other ranks. The battalion embarked from Quebec on 30 September 1914, on the troop ship Andania, and disembarked in the UK on 14 October, and arrived in France on 7 February 1915.