What Jad is up to is pretty darn impressive. I suppose my WW 1 studies could count for continuing education. The course of action was a bunch of twists and turns. And I doubt I could get that rich of an experience in a formal University setting. I got to learn about the era. Art, literature, pop music, airplanes, the burgeoning Auto industry in how Indiana had such a big roll... movies.
The battles and the state's craft were fascinating, but how the typical Russian or German or Irishman or American lived back then caught my interest. There were little differences and major differences, but people are still people and all the same psychology's apply.
The big insight that I came up with on my own, was how was this inevitable War held back for so long?
The diplomats became a proper profession. Imagine an Englishmen living in Russia as a diplomat and his children play with his counterparts children, and they form bonds. Then do that for a couple generations and you are less likely to get into a shooting War.
The western world did not want a replay of the Napoleonic Wars. At all costs.
So I think they got modern diplomacy right - straight out of the box. They held back the inevitable for 100 years.
Unfortunately they waited so long that the Industrial Revolution came up and created some very bad weapons.