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.
Chlorine at Ypres 1915, phosgene and mustard gas: how chemical warfare worked in WW1, why it never broke the front, and what replaces it in Frontkrieg.
Maxim, MG 08, Vickers and Lewis: precise WW1 machine gun specs, how they froze the front into trenches, and how infantry firepower works in Frontkrieg.
The U-boat campaign of 1914–1918 — U-9, Lusitania, convoys — plus a full guide to the submarine unit in Frontkrieg: cost, counters and battleship-hunting tactics.
The full catalog of all 14 Frontkrieg units: what each costs, how long it builds, which buildings it requires, and how to cut mobilization time by 2.5x.
Frontkrieg's three diplomatic states — peace, war, alliance. How to declare war instantly, grant right of passage, make peace, and why you can only attack an enemy.