At 7:28am on July 1st, 1916 the Battle of the Somme started with explosion of 17 massive 'mines' underneath enemy territory. Lochnagar was the largest of these. It remains "The largest crater ever made by man in anger".
These pictures represent the four main causes of WW1 More
WWI Poster - recruiting women for the Motor Corps of America
Headline for a June 28, 1914 newspaper: Heir to the Austro-Hungarian Empire Archduke Franz Ferdinand and his wife Sophie were assassinated in Sarajevo.
War poetry analysis of Wilfred Owen's 'Dulce et Decorum est'.
"Blood Swept Lands and Seas of Red" The Tower of London's display of 888,246 Ceramic Poppies commemorating the 100th anniversary of WWI, by Paul Cummins
Trooper Bert Main and Songster (the oldest horse to serve in WW1) in France 1915. Photo © Loughborough Carillon Tower and War Memorial Museum (This image is licensed under Creative Commons BY NC SA)
World War 1 Soldiers
Britain declared war on Nazi Germany on 3 September 1939. You can read the newspaper headlines from that day at The British Newspaper Archive.
Africa at the dawn of World War I, 1914