Nope, not common knowledge over here, and not just Newfoundlanders either:
"On the allied side there are the French, who always get left out of the story. Their casualties were almost twice those of the Australians. Of course troops came from New Zealand, from India, from Australia, from all parts of the Empire –- even Canada: right near the end troops from Newfoundland arrived. And from the United Kingdom itself there were troops from England and Ireland, from Scotland and Wales. This is mostly unknown to Australians and I think it’s a really important part of the story and it puts the Australian role into perspective."
From
https://www.awm.gov.au/blog/2013/04/...ridge-too-far/
Now you have pointed it out I feel more than a little embarrassed, never let the facts get in the way of a good story.
Rich