The Battle of Arras took place during World War I from April 9 to May 16, 1917. It was part of the larger Arras Offensive and aimed to break through the German defenses in northern France. The battle involved British forces, supported by Canadian troops, and was marked by the use of extensive tunneling and surprise attacks. The battle resulted in significant territorial gains for the Allies, capturing the city of Arras and surrounding areas. However, the offensive faced fierce German resistance, leading to heavy casualties on both sides. Ultimately, the battle did not achieve its strategic objectives, contributing to the ongoing stalemate of the war.