https://www.thoughtco.com/the-first-battle-of-the-marne-1779220
https://firstworldwar.com/source/marne_joffreorderoftheday.htm
https://en.wikipedia.org/wiki/Battle_of_Sharqat
https://www.mentalfloss.com/article/31882/12-technological-advancements-world-war-i
https://firstworldwar.com/source/marne_joffreorderoftheday.htm
https://en.wikipedia.org/wiki/Battle_of_Sharqat
https://www.mentalfloss.com/article/31882/12-technological-advancements-world-war-i