Duchess Senna was one of three Sphyrna-class Hammerhead corvettes that was sent by Senator Bail Organa to reinforce Phoenix Cell, a rebel unit led by Commander Jun Sato. Easily identified by its red markings, Duchess Senna and its sister ships The Lightmaker and Amity’s Arrow arrived to the planet Lothal under the leadership of Princess Leia Organa disguised as ships partaking in a relief mission for the battered Lothal citizenry. The Galactic Empire, who was in control of the planet, suspected a possible rebel theft, however, and attempted to lock the ships down. Despite their efforts, the rebel Spectres group managed to hijack Duchess Senna and the other corvettes and bring them back to Phoenix Squadron. Duchess Senna flew with the Phoenix Squadron fleet on a number of occasions, and provided support when necessary. During the year 2 BBY, Duchess Senna participated in a battle that took place over the planet Atollon, where it was engaged with Imperial forces led by Grand Admiral Thrawn. Along with many rebel and Imperial ships, Duchess Senna was destroyed in the conflict.