These details amplify the article's Tim Cook quotation:

1. A consensus in 1914 supported the war effort but each group had its own sense of the proper nature and extent for that Canadian effort.  These differences enflaming old prejudices and darkening community relations under the strain of the war effort.

2. Recent English & Scots immigrants generally supported total war (but also socialist opposition to the War) while older British (especially Irish) communities (especially rural and small town) questioned total war (as distinct from voluntary) economic and military mobilization.  Many French Canadians and many immigrants from central Europe, etc. shared this opposition to compulsory mobilization (but volunteers served with distinction).

3. The war effort increased industrialization, urbanization and integration of Canadians but deepened differences and hostilities between ethnic and religious communities for 40 years (and therefore the evolving debate about what WW I meant).