Baghdash is a commander in the Alliance forces. During the battle at the Doria starzone, he "deserted" the National Salvation Military Council (which had staged a coup d'état on the planet Heinessen).
Though he had originally been operating under assassination orders, he instead requested to serve in Yang's fleet after seeing the defeat of his comrades. His presence was met with suspicion and animosity, especially from Julian.
Unsurprisingly, Baghdash considers surviving to be of greater importance than ideals or principles.