Denmark as a warning for Norwegian mobilization

Denmark's invasion was a clear warning that Germany was not stopping there. Denmark mattered less as a prize in itself than as a geographic crossroads controlling routes toward Scandinavia and the Baltic. The Anglo-German Naval Agreement had already signalled that German rearmament was changing the strategic position, yet Denmark had done little to prepare. A rapid national radio alert could have brought Norwegian troops to their garrisons and put commanders, heavy weapons, and coastal defences into readiness at Narvik, Trondheim, and Oslo before the landings. Where Norwegian defenders were already in position, as around Oslo, they could sink or damage German ships. Strategic warning mattered only if it produced immediate mobilization and local command action.