The Battle of Vimy Ridge, during the First World War, is Canada's most celebrated military victory. The four divisions of the Canadian Corps, fighting together for the first time, attacked the ridge from 9 to 12 April, 1917 and captured it from the German army. It was the largest territorial advance of any Allied force to that point in the war.

More than 10,500 Canadians were killed and wounded in the assault. Today an iconic white memorial atop the ridge honours the 11,285 Canadians killed in France throughout the war who have no known graves.

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Additional info for 1st Division
1st Canadian Division

The 1st Division's plan is to attack from its position west of the Arras-Lens road and capture the main German trenches in front of Thelus, carry through to capture positions south of Thelus and push east to capture Farbus. The plan goes well; the front line falls quickly but resistance stiffens as they reach the second line. By the end of the day, the 1st Division has achieved its objectives.