Canada's triumph at Vimy Ridge in 1917 was the first battle of WWI decisively won by the allies.
Hugely outnumbered, Stone ensured that his companies and platoons mutually supported one another by interlocking fire. He made it clear that come what may, there would be no retreat. Alive or dead, his battalion would not leave its Kapyong position. This tended to focus the troops.
So well-prepared were the Patricias that "only" 10 were killed. Always chary at awarding medals, Col. Stone figured it was just another day in war. He earned another DSO, and awarded one Military Cross, one Distinguished Conduct Medal, a couple of Military Medals to individuals.