Rome's legions march ever onward in Daniel Ottalini's Steam Empire Chronicles. Constantine Tiberius Appius leads his men back to Rome for a Triumph. But their respite is short lived, as they are soon sent east to face the ever-growing Mongol menace in Mesopotamia. With the Empire under attack from without, treachery and political maneuvering threaten to topple Rome from within. Constantine and his men have no choice. They must defeat the Mongols and their new weapons or die trying in IRON TRIBUNE.