The armistice1 that ended the fighting in World War I was signed by representatives from Germany, France, and the United Kingdom, at 5AM on 11/11/1918, in a railroad carriage in Compiègne, France, but the agreement didn't go into effect for another six hours. WWI would end at the 11th hour of the 11th day of the 11th month, which was fine for those who like things wrapped up in neat little packages for posterity, but bad for those who were still in the trenches living like rats and getting shot at.
It was common during WWII for USAF (United States Air Force) ground crews to write out little messages on bombs meant to be dropped on the enemy. It was a sort of middle finger to the soldiers whom they blamed for there being a war in the first place. There are even stories of bomber crew members throwing trash out the plane as an extra bit of nastiness and rancor to go along with usual payload of high-explosive and incendiary ordinance.
French Corporal Jules André Peugeot was 21 years old when he was shot and killed by a German patrol. Although he was the first soldier to get shot in WWI, he ended up being the second person to die. The guy who shot Peugeot, German Lieutenant Albert Mayer, was the first person to actually die in WWI, with Peugeot himself succumbing to his wounds only a short while later. It all happened during a 13-person skirmish in the little French town of Joncherey, near the Swiss and German borders.