Room 40 read some 15,000 German signals, the Zimmermann Telegram brought the United States into the war, and Mata Hari turned out to be a media figure. How intelligence was gathered in 1914-1918.
Eight Frontkrieg mechanics with real 1914-1918 prototypes: why defence beats attack, why an early tank is impossible, and what the game deliberately flattens.
9.7 million military dead, up to 10 million civilians, 21 million wounded and four vanished empires in 1,568 days: full World War I casualty statistics by country.
Wellington House, the Kitchener poster, the Bryce Report in 30 languages and 755,000 speeches in the US: how WW1 propaganda worked, and why information is still a weapon in Frontkrieg.