It was customary for the Hellenistic warlords to name individual units of phalangites according to the color of their shields. Thus, the phalanx of the Hellenistic armies used terms such as "Chrysaspides" (Greeks: Χρυσάσπιδες 'gold-shields'), "Chalkaspides" ('bronze-shields') and "Leukaspides" ('white-shields') to denote formations within their phalanxes, the two latter being important in the composition of the Antigonid phalanx. Antigonus Doson armed the citizens of Megalopolis as Bronze Shields for the Sellasia campaign in 222 BC. These units are mentioned by classical writers when describing the Antigonid army in battle. Although these units most probably ceased to exist after the battle of Pydna in 168, as the Antigonid kingdom had been crushed by Rome. These names were not only limited to the Antigonid (or Achaean) phalanx though. Plutarch tells us of Mithridates VI of Pontus, "The Great", having a corps of 'Chalkaspides' against Sulla at Chaeroneia. The majority of the Seleucid phalanx was probably formed by the two corps that are mentioned in the Daphne Parade of 166 BC, namely the 10,000 "Chrysaspides" and the 5,000 "Chalkaspides". Little else is known specifically about them, although they may have been present at the battle of Beth-Zachariah in 162. "Leukaspides" are mentioned in the army of Pyrrhus of Epirus on his campaigns in Italy. Under Cleomenes III, the Spartan army was reformed in 228 BC. Until then, the Spartans had merely kept the traditional hoplite spear. Cleomenes created a 4,000 strong phalanx and then formed another phalanx with 2,000 freed helots in order to counter the Antigonid Leukaspides. Philopoemen reformed the army of the Achaean League into the Macedonian phalanx in 208–207 BC and we are told that, by the end of the 3rd century, the Boeotians did the same, thereby creating the 'Peltophoroi'.