- Never near Argos -

[Mediolanicus]

Book IX, 30-36.

Background:

The victory that Pyrrhos had crafted at the bridge on the river Kydnos proved to be an important one. It boosted the morale of all Ptolemaic towns of Asia Minor, which soon drove what was left of the Seleucid armies back up north, away from the Ptolemaic held coast line.
The loss of so many men proved costly for the Seleucids, since their main armies where out campaigning in Media, Parthia and even further to the East. This gave the Ptolemaios II Philadelphos the opportunity to capture the important Syrian town of Antiocheia in the spring of 259, after laying siege to it for the winter.
It is unknown whether Pyrrhos and his army helped with the taking of the city. In fact we know little at all about the actual taking of the city.
It was enormously difficult to capture a city of that size and with such fortification by direct assault, unless the garrison was ridiculously small, which is unlikely in this case.
Since the city was taken after a siege of only six months, way to short to starve such a city out, it seems plausible to me that the city was taken not by force, but by treachery from within the walls.
The fact that we know there was at least some fighting in the streets, so it seems most likely that the gates were opened by rebellious citizens who favoured the Ptolemaic Empire above the Seleucid Empire, after which the Ptolemaic troops could storm in and surprise the enemy troops at their barracks.

Pyrrhos was definitely, and perhaps tragically, there during the attack on Palmyra in the summer of 258. The independent city had happily raided the Ptolemaic territories in the Levant on request of the Seleucids.
The Ptolemaic Empire no longer recognised the independence of Palmyra and attacked. Pyrrhos and a Ptolemaic captain, seemingly under the Epirote's command, set up camp at opposite sides of the city. They soon risked a direct attack.

The text:

[…]
The Italians breached the wall first, attacking and plundering anything they saw in the streets. The Egyptians soon entered the city too and began to push their way to the citadel.
[…]
The fighting was hard and many casualties were suffered on both sides, but it was over fairly soon. The citadel surrendered and the town gave up his independence, becoming a subordinate of the throne of Ptolemaios.
[…]
Pyrrhos, who was not used to the desert sun, had watched to whole battle from his horse, in full panoply. It was during the fourth hour of fighting that he fell of his mount.
[…]