Delta Group was a component battle group of the Rebel Alliance's navy, answering to General Vanden Huyck Willard. This group, along with others, found itself at the Mako-Ta Space Docks, poised to separate from the main fleet in preparation for future combat operations against the forces of the Galactic Empire.
As the various groups prepared for their jump to hyperspace, a malfunction prevented the starships from initiating their launch. Almost immediately following the failed launch attempt, Darth Vader's Death Squadron appeared and obliterated Willard's command ship, the Yavin's Hope.