Therefore, when the Fourteenth Legion moved to the right to release the Assault Legion and the Fifteenth Legion to merge as one, although there were actions by the Sassanid Fars to send troops to prevent it, they didn't put in much effort, especially since this movement was from the direction of the Fourteenth Legion towards the Fifteenth Legion.
This behavior caused the invincible Thirteen Roses Legion to drift further away from the other two legions. This super elite legion, led by descendants of the Roman Royal Family, finally found itself completely engulfed by the Parthian Army when the Fourteenth and Fifteenth Legions merged.
