Dash Jordan serves as a radar operator aboard the Space Battleship Yamato during its mission against the Comet Empire. His duty station requires him to scan sensor data, detect threats, and track enemy movements during space combat, providing vital tactical intelligence to the bridge crew in engagements against Comet Empire forces and Dessler's fleet.

When the Yamato journeys to Telezart in response to Teresa's distress signal, Dash undertakes navigation and communications tasks. He remains with the crew as the ship confronts the White Comet Empire's invasion of Earth. During the Yamato's final assault on the Comet Empire's mobile fortress Gatlantis, including the battle against Emperor Zordar's flagship, Dash operates critical sensor systems. His documented role is confined to operational duties within the events of the 1978 film narrative.