The Third siege of Babylon took place during Antigonus I Monophthalmus' expedition to the Seleucid domain in the context of the Babylonian War.
In 310 BC, after an unsuccessful siege of the city of Bayblon by his son Demetrius, Antigonus decided to march against Seleucus himself.
Seleucus, who had just reconquered Babylon, was heavily outnumbered, but emboldened by his earlier victories he decided to make a stand.
Antigonus named Archelaus as the new satrap, while Seleucus ordered his army to disperse and fight the invader in a guerrilla war.
Both retired to their camps for the night; but whereas Antigonus's army disarmed and went to sleep, Seleucus ordered his men to dine and rest in full armor and in their ranks.