Tsushima's logistical logic in later wars

Japanese expansion sought useful islands while denying the Americans potential airfields and logistics hubs across the Pacific. An undefended island could become an airfield after Seabees arrived with merchant shipping and a small escort, whereas an occupied island demanded an opposed landing; denial could therefore impose costs disproportionate to the island's intrinsic value. Imperial German planning similarly favored battle near home, where damaged German ships might reach repair yards while British ships faced a longer return. In the Second World War, British submarines attacked Italian supply lines in the Mediterranean to reduce the forces Italy could sustain. None of these ideas was invented at Tsushima, but the battle made logistics-centered operational thinking vivid enough to remain prominent in later planning.