Vimy Ridge was what made Canada come into its own. The entire operation was conceived, planned and executed by Canadians using Canadian-designed tactic (creeping barrage) after the British and French had already failed to take the objective. It led to the Statute of Westminster which gave us (along with Ireland, Australia, NZ, etc.) full independence in defence, foreign policy and Royal Succession (Canada’s Parliament had to ratify the accession of George V following Edward’s abdication).
Odd that we can thank that arrogant , self absorbed Sam Hughes for helping to keep the CEF from being adsorbed by the British Army . Later Gen. Arthur Currie actually refused orders from Haig to attack Passchendaele , waiting until he was ready .
It was under Currie that the Canadians made their reputation as an elite assault force , with an unbroken string of major victories in 1917-1918.