@CWO:
My plastic storage trays are set up so that the butternut-grey ANZAC-pattern ANZAC pieces from AAP40(2) stand in for Australia, New Zealand and South Africa while the butternut-grey British-pattern ANZAC pieces from AAP40(1) stand in for Canada (which is understood to include Newfoundland, and which in principle would also include Eire if it ever went from being neutral to Allied). That covers the six Commonwealth Dominions, in two groups of three each. The only cross-set transfer I had to do was to allocate some of the AAP40(2) ANZAC AAA guns to the Canadian set, since AAP40(1) lacked an AAA sculpt.
I would have used the generic AA gun for Canada just for zero cross-set transfer