The Allies claimed victory at the end of the Second World War, but the United States' invention of the atomic bomb and its replication by the Soviet Union posed new dangers for all nations. This book examines what Canada's Cold War Army did to prepare for nuclear war — and why and how it did it. Although the war never materialized, officers, scientists, engineers, and designers developed a collaborative and systematic approach to problem solving that not only transformed the organization of Canada's army but also influenced how armies in the Western Alliance related to one another during the Cold War and beyond.