The theatre where the Great War began on 28 July 1914 and first started to collapse in September 1918: three repelled invasions, the Albanian Golgotha and the Salonika breakthrough.
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.
Roughly 8 million horses, mules and donkeys, over 100,000 homing pigeons and tens of thousands of dogs: how animals carried the logistics, communications and medicine of 1914-1918.
The unofficial ceasefire on the Western Front, 24-26 December 1914: around 100,000 soldiers, the truth about the football match, and why it never happened again.
Artillery caused roughly 60% of battlefield casualties in 1914-1918. A guide to gun types, Big Bertha and the Paris Gun, the shell crisis, the creeping barrage and counter-battery fire.
Mobilization in 1914 ran to the minute: 11,000 troop trains, 6 weeks to beat France, and two incompatible track gauges. How railways decided World War 1.