[NOTE: Duplicate of the AAR on the Paradox forum. I will add more posts later.]
[this is played as the "Yellow" player in the Anno Domini 375 scenario, with the patch 1.07b and minimal alterations to standard game rules]
November, 375. The Roman Empire has officially been divided for 11 years between the Western and Eastern parts. Valentinian, the Western Emperor, has just died and his sixteen-year-old son Gratian has just succeeded him. From his capital at Trier, he must keep watch on the turbulent Germanic tribes on the other side of the Rhine and Danube, in particular the Alamans. His uncle, the Arian Eastern Emperor Valens, based in Antioch, will have to confront the Visigoths and large barbarian migrations that loom over the horizon...Meanwhile, on the northern shores of the Black Sea, the powerful Huns, having just emerged from the steppes, are on the verge of crushing the Ostrogoths. - an unknown medieval chronicler (scenario description)
The Inhabited World in the Seleucid year 687, in the reign of Shapur II
Seven hundred years ago, the Inhabited World lay prostrate before the Greeks. But, seven hundred years after the conquests of Alexander, the powerful Sassanid dynasty reigns in the heart of the empire of Cyrus and Darius - Mesopotamia and Persia. The world has changed - the disunited but brave Greek people who have crushed the armies of Darius and Xerxes are now themselves a decadent, imperial people, rivaling the distant inhabitants of Italy as the true masters of the world. But their great empire is threatened on all sides - the Romans of the West and of the East are facing against fierce, blonde-haired warriors from the dark forests of lands far away from Shapur's capital at Ctesiphon. Even greater threats loom far to the north...Inside, the peoples of their universal empire are torn apart between reverence for the old gods and for Christ. The dominant Christian class is itself torn apart, for they argue among themselves violently over the very nature of their god. Is time right for Shapur to once more threaten the peace of the Empire?
The Persian state
To the south, the inhabitants of the desert are split among the kingdoms of the Lakhmids and the Ghassanids, tributaries of the Persians and the Romans, respectively. To the north, Armenia is also in league with the Emperor in Constantinople. The host of the King of Kings is, as he believes, ready to march to Antioch and the inner sea the moment some internal squabble upends the fragile internal peace of the Empire. He will not have to wait for long.