The Battle of Vimy Ridge was a military engagement fought as part of the Battle of Arras, in the Nord-Pas-de-Calais region of France, during the First World War. The main combatants were the Canadian Corps against three divisions of the German Sixth Army. The battle was part of the opening phase of the British-led Battle of Arras, a diversionary attack for the French Nivelle Offensive, and took place from 9 April to 12 April 1917.The objective of the Canadian Corps was to take control of the German-held high ground along an escarpment at the northernmost end of the Arras Offensive. This would ensure that the southern flank could advance without suffering German enfilade fire.