Extras

Video thumbnail: Secrets of the Dead Speed, Submarines, and Espionage

Secrets of the Dead

Speed, Submarines, and Espionage

The German navy used speed in the form of chewing gum to stay awake for more than 48 hours

Speed, Submarines, and Espionage

Video thumbnail: Secrets of the Dead Preview | World War Speed

Secrets of the Dead

Preview | World War Speed

Follow historian James Holland as he unearths the truth about amphetamine use in World War

Preview | World War Speed

Video thumbnail: Secrets of the Dead Blitzkrieg on Speed

Secrets of the Dead

Blitzkrieg on Speed

Historian James Holland and his team attempt to walk 22 miles wearing full WWII regalia.

Blitzkrieg on Speed