In 1934 the Japanese begin designing The Yamato, the most powerful battleship in history. Constructed in absolute secrecy, the Japanese go to extraordinary lengths to ensure no detail is revealed.

The tide of war in the Pacific has now fully turned against the Imperial Japanese forces. In a fierce and brutal island hopping campaign, the Americans are winning battle after battle, rapidly gaining ground in their ultimate goal of invading mainland Japan. However, the Japanese decide that the island of Okinawa will be their last bastion of defense.

Five times the length of Hadrian’s Wall, Hitler’s Siegfried Line was one of the greatest fortifications in the history of warfare. The campaign to breach it took 6 months and cost the American forces close to 140,000 casualties.

Five times the length of Hadrian’s Wall, Hitler’s Siegfried Line was one of the greatest fortifications in the history of warfare. The campaign to breach it took 6 months and cost the American forces close to 140,000 casualties.

Uncover caves, overgrown bunkers and top-secret bases that hide the secrets of the terrifying weapons Japan sent into war — killer planes, rocket bombs and super torpedoes all guided by human pilots.

In 1944, the Japanese turn to desperate new tactics: kamikaze suicide bombers. Now, experts are uncovering the clues to the killer planes, rocket bombs and super torpedoes guided by human pilots that the Japanese sent into the war.

As Hitler rises to power, he focuses on rebuilding his navy. To do this, he orders the construction of two battleships that are larger and more powerful than anything else at sea.

As Hitler’s power grows within Nazi Germany, so does the SS — the most sinister force in Nazi Germany and one of the most terrifying cults the world has ever seen. Airs 1/21 at 10 pm ET. Check local listings.

As Europe falls to German armies, Hitler becomes convinced of his own military genius. He orders the construction of the Wolf's Lair — a huge, heavily protected command complex of bunkers and buildings.

As European countries fall like dominoes to the all-conquering German armies, Hitler becomes convinced of his own military genius. He orders the construction of a huge, heavily protected command complex of bunkers and buildings named the Wolf’s Lair.

In a quest for world domination, the Nazis built some of the biggest and deadliest pieces of military hardware and malevolent technology in history. The new season continues to explore Germany’s engagement in World War II from a unique perspective, uncovering the engineering secrets of iconic structures and weapons. Season 2 premieres 1/7 at 10 pm ET. Check local listings.

In retaliation for devastating Allied bombing raids on German cities, Hitler orders the development of a ground breaking weapon: the world's first cruise missile, the V1. This is the story of one of the most ambitious projects of the Third Reich.