I can't help you if you don't give me the documents.
The best known system is the French Ancien Régime (Old Regime), a three-estate system used until the French Revolution (1789–1799). Monarchy was for the king and the queen and this system was made up of clergy (the First Estate), nobles (the SecondEstate), and peasants and bourgeoisie(the Third Estate).
hope this helped! :)
Which war are you asking about. There have been hundreds throughout history