At the Battle of Gabiene in 316 BC, they settled with Antigonus I Monophthalmus after he managed to take possession of their baggage train (consisting of their families and the result of forty years of plunder).
Over the course of the Wars of the Diadochi, Antigonus had developed a severe hatred of the veteran unit due to almost dying in a mutiny caused by them, and also being crushed in battle by them multiple times.
[2] He sent them to Sibyrtius, the Macedonian satrap of Arachosia, with the order to dispatch them by small groups of two or three to dangerous missions so that their numbers would rapidly dwindle.
[5] Their position beside the king at the Battle of Magnesia in 190 BC suggests that they were the premier infantry guard unit in the Seleucid army.
Livy mentions a cavalry corps called argyraspides as a royal cohort in the army of Antiochus III the Great at Magnesia.