It's a bit off topic, but anyway...
Pyrrhos was quite famous for his elephants of course; and the Eastern factions (Seleukeia, Baktria) could recruit elephants in certain provinces, and the way of thinking of the Team probably was that Pyrrhos traded his elephants with eastern Diadochi (most probably Arche Seleukeia or the Ptolemaioi). In the same text (by Plutarchus; the main literary source about Pyrrhos) is mentioned that Antigonos of Makedonia also had elephants.

The Gauls who formed the rearguard of Antigonus, a numerous body, made a sturdy resistance; but after a fierce battle most these were cut to pieces, while those who had charge of the elephants were hemmed in and surrendered themselves and all their animals.
I suppose quite a lot of Diadochi had elephants (provided they were nice allies) I even recall from the EB description that elephants were 'commonly' traded between them (if I'm not mistaken).
Perhaps some selected Diadochi (I'm sure there is other literary evidence of elephants) should have the possibility of recruiting elephants in their capital, to symbolize this trade. Better even would be that one only could recruit the beasts if one has the right alliances (through traiting or builing scripting for instance)

Sorry for the comment on this issue, but what I noted seemed like a little awkward. Perhaps I'm even wrong and Makedonia can already recruit elephants
Or am I misinterpreting the text and it was poor Pyrrhos's elephants being captured?