How Vimy Ridge was broken

How was the German position on Vimy Ridge broken in April 1917?

The Canadian Corps combined an exceptional concentration of artillery with mines, tanks, aircraft, and carefully prepared ground operations.

Vimy Ridge was a four-day assault in April 1917 built around an enormous concentration of British and Canadian artillery. Heavy and field artillery groups supported the Canadian Corps, with additional guns on the flanks. Mining and counter-mining prepared the ground below the position, while tanks and air operations added to the attack. The mine total is recalled as roughly thirteen, but the exact gun total is left unresolved. The explanation stresses the preparation needed for a First World War combined-arms attack. It remains a broad account of a land battle, with a detailed assessment requiring specialist sources.