Defeated Romans in other armies?

[Sarcasm]

Lysandros PM'd me about Quintus Labienus. He was the ambassador to the parthians and after Caesar was murdered and Brutus and Cassius defeated (whose side he took) he defected to the Parthians. He then led a sizeable roman-parthian army and took pretty much all of Asia Minor, but was killed a year later by a roman counterattack. http://en.wikipedia.org/wiki/Quintus_Labienus

Does anyone know much about the army composition? Were many of those soldiers romans? I know it's not in italy, but this discussion of romans refusing to serve in other armies might be enlightened with more information on this event.

Apparently he had his own legions, some troops from L. Decidius Saxa legion's and a whole lot of Asian garrisons. Most of Asia Minor defected to him.

[Sarkiss]

Parthia, i think. I remember after Valerian lost his army in Persia (Was it Valerian?) some years later Chinese records report fighting strange white barbarians at a fortress in the Tarim whose armour was described as Roman... o_O But that's not confirmed.

yep, not confirmed, IIRC just an assumption. it presumably were Crassus legions' survivors. after Carrhae. dont remember the details, i read the article a while ago.

[Zaknafien]

Quintus Sertorius defected to the Lusitanians with an army of around 3,000 Roman soldiers, but this was during the period of Sulla's civil war.. then again there's Horatius on the bridge as an example of Roman character, although its likley propaganda. Its a difficult issue to decide.

[Ludens]

Quintus Sertorius defected to the Lusitanians with an army of around 3,000 Roman soldiers, but this was during the period of Sulla's civil war..

Not exactly. Sertorius and his Senate-in-exile did fight with the Iberians against the Sullan regime in Rome, but it was Sertorius who was in charge, and not the Iberians.

[Zaknafien]

Right---what I mean was he fought against the "government" in Rome. Albeit an illegal government you could say.