
This series unveils the engineering secrets of various iconic megastructures that went on to spark a technological revolution, ultimately changing warfare forever. The Nazis built some of the biggest and deadliest pieces of military hardware in history. Adolf Hitler hired men like Wernher von Braun, Ferdinand Porsche and Alfred Krupp to build huge terror machines, high-tech superguns and weapons of mass destruction.
A closer look at the secret preparation and torpedo technology that was behind Japan's devastating surprise attack on Pearl Harbor in 1941.
As a deadly battle threatens to bring the United States' B-29 bomber in reach of Japan, the Japanese bank on a mighty weapon of their own to bring them victory.
Japanese soldiers construct an island-wide structure on Peleliu in 1944, creating a killing zone that results in the deaths of thousands.
A look at the final months of World War II, as Japan unleashes suicide bombers while turning its islands into a fortress to repel American invaders.