Looks like we have another case of someone who believes that every major operation of WWII involved mainly Canadians.
Any
effective, major operation involved anyone but the British... And yes, a multiplicity of those operations involved Canadians
Thirty Canadians took part in the Dambusters raid (using Barnes Wallis's ingenious bouncing bombs), out of a total of almost 150 men.
Wallis did not invent the bouncing bomb... It's a Canadian innovation that was employed to remove beaver dams. We'd been using that for years before it was in a military application
By the by, the Britons were allocated the responsibility for checking the tire pressure of the planes, fetching coffee and cleaning out the latrines. That doesn't count as dambusting