https://www.theatlantic.com/projects/world-war-i-in-photos/
World War I in Photos: Introduction
A century ago, an assassin, a Serbian nationalist, killed the heir to the throne of Austria-Hungary as he visited Sarajevo. This act was the catalyst for a massive conflict that lasted four years. More than 65 million soldiers were mobilized by more than 30 nations, with battles taking place around the world. Industrialization brought modern weapons, machinery, and tactics to warfare, vastly increasing the killing power of armies. Battlefield conditions were horrific, typified by the chaotic, cratered hellscape of the Western Front, where soldiers in muddy trenches faced bullets, bombs, gas, bayonet charges, and more. On this 100-year anniversary, I've gathered photographs of the Great War from dozens of collections, some digitized for the first time, to try to tell the story of the conflict, those caught up in it, and how much it affected the world. This entry is part 1 of a 10-part series on World War I. In this installment, I hope to give a glimpse of the war's beginnings, and a preview of what is to come.
- (CPL Blog editor note: The horrific results of poison gas in warfare have spurred the drafting of various treaties signed since the end of the first world war. Progressive agreements in this area have resulted in the banning of the use of chemical weapons in warfare as well as the production, transportation and stockpiling of these compounds. Sadly this has not brought an end to their use in conflicts. from https://www.theguardian.com/science/blog/2016/sep/16/chlorine-the-gas-of-war-crimes)