Titus Labienus vs Xiahou Ba

Labienus served as Caesar's senior legate during the Gallic Wars. He commanded key victories, including the defeat of the Treveri and the relief of Quintus Cicero's camp during the revolt of the Nervii.

When Caesar crossed the Rubicon, Labienus defected to the Pompeian side. He abandoned Caesar's camp and joined the Optimates, becoming one of their most capable commanders. This was a major blow to Caesar.

Labienus commanded the Pompeian cavalry at Pharsalus. He was defeated by Caesar's forces and fled the battlefield. After the defeat, he continued to resist Caesar's forces in Africa and Spain.

Labienus commanded the Pompeian forces at the Battle of Munda in Spain. He was killed in the battle, which ended the last major resistance against Caesar. His death marked the final defeat of the Optimates.

After Sima Yi's coup at Gaoping Tombs, Xiahou Ba, a Wei general, defected to Shu. He feared persecution due to his family ties to the Cao clan. His defection provided Shu with valuable intelligence and a skilled commander.

Xiahou Ba commanded Shu troops in later Northern Expeditions under Jiang Wei. He participated in several campaigns against Wei, using his knowledge of Wei military tactics to aid Shu's efforts.

Xiahou Ba was killed in battle against Wei forces during a campaign led by Jiang Wei. His death marked the end of a prominent defector's career and a loss for Shu's military leadership.