The Battle of Vimy Ridge took place over four days in April 1917 during the First World War. In this battle, the four divisions of the Canadian Corps fought together for the first time, and successfully took the high ridge at Vimy from German control. Despite the high number of Canadian casualties suffered at Vimy, the battle was regarded as a tremendous military victory, and one that was widely celebrated. The Battle of Vimy Ridge is considered by many historians to be an important nation-building event in Canadian history.