Parthian general Surena, the victor of Carrhae, was executed soon thereafter by King Orodes, who felt uneasy at Surena's rising success and charisma and saw him as a potential threat.
POD: The day before the Battle of Carrhae, Surena gets reliable intelligence (say, through court intrigues) that King Orodes is getting very nervous at Surena's success and is considering him executing if he gets more military glory.
Does Surena still fight in Carrhae, knowing he'll probably be executed but prefering to loyally serve the king nevertheless?
Does he let the Romans through, hoping they can destroy Orodes, and then Surena can pick up the pieces either as a fully sovereign king or as a client king of Rome?
Does he actively ally with the Romans to eliminate Orodes?
Or is Surena killed by his soldiers anyway after he decides to rebel?
POD: The day before the Battle of Carrhae, Surena gets reliable intelligence (say, through court intrigues) that King Orodes is getting very nervous at Surena's success and is considering him executing if he gets more military glory.
Does Surena still fight in Carrhae, knowing he'll probably be executed but prefering to loyally serve the king nevertheless?
Does he let the Romans through, hoping they can destroy Orodes, and then Surena can pick up the pieces either as a fully sovereign king or as a client king of Rome?
Does he actively ally with the Romans to eliminate Orodes?
Or is Surena killed by his soldiers anyway after he decides to rebel?