Time Travel, from the Greek-Persian War to the Full Game

An ordinary person who had just played a few war management games was caught by the will of war because of his arrogant speech and was transported to the ancient battlefield: "After all the wars are fought, I will send you back to your era." You experienced the flames of the Greco-Persian War, witnessed the glory of the Roman Empire, and experienced the end of the barbarian invasion; you assisted Charlemagne in France in his expeditions to build a new empire, and you plundered across the Ice Sea and Ragnar, bringing destruction and death to the European continent; you participated in the Crusades and the pagans to fight for land, and you also fought back with the victims to crush the hypocritical faith... With only your unyielding will and sporadic knowledge, can you use your strategy and wisdom to complete the thousand-year iron-blooded history from the Greco-Persian War to the Siege of Belgrade and become the master of the war? Remember, war can give and take away everything.