It's perhaps worth noting that even in the U.S., these wartime mobilizations have often been carried out by comparatively authoritarian governments (especially in comparison to peacetime U.S. government), e.g. the suspension of habeas corpus and mass arrests during the U.S. Civil War, German internment and the Espionage and Sedition Acts of World War 1, and mass Japanese internment camps and the Office of Censorship during World War 2.