Book excerpt: In August 1917, the Canadian Corps captured Hill 70, a vital piece of ground just north of the French industrial town of Lens. The Canadians suffered some 5,400 casualties and defeated three days of determined German counter attacks. This spectacularly successful but shockingly costly battle was as innovative as Vimy, yet only a handful of Canadians have heard of it or of subsequent attempts to capture Lens, which resulted in nearly 3,300 more casualties. In Capturing Hill 70, leading military historians mark the centenary of this triumph by dissecting different facets of the battle, from planning and the conduct of operations to long-term repercussions and commemoration. This richly illustrated and thought-provoking book reinstates Hill 70 to its rightful place among the pantheon of battles that helped forge the reputation of the famed Canadian Corps during the First World War, and it sheds new light on the key role played by Lieutenant-General Sir Arthur Currie, who fought his first major action as commander of the Canadian Corps.