Grace Maitland Steward, nicknamed "Gracie," served as a witch in the Liberion Army. Her combat deployments with the Liberion Volunteer Army included the Dunkirk retreat and Battle of Britannia. During this period, she transported Liberion striker units to Britannia under lend-lease agreements and trained local witches on these models while Liberion maintained limited military presence in Europe.

After retiring from active duty, she initially took desk duties before pioneering the "Aviation Witches Music Squadron" concept. This initiative recruited witches unfit for frontline combat, driven by her conviction that music could uplift wartime morale. She persistently secured funding and personnel to establish the unit.

As the squadron's manager and producer, she demonstrated music's capacity to support war efforts remotely. She orchestrated public relations campaigns and performances across liberated regions like Gallia, aiming to inspire hope. Her leadership extended to personal support, such as facilitating Éléonore Giovanna Gassion's emotional return to her war-ravaged homeland through missions blending operational objectives with individual healing.

Her personality reflected practicality, like choosing cup noodles over cooking despite culinary competence. She balanced military protocol with empathy, exemplified when approving Virginia Robertson's discharge after power loss to prevent combat redeployment—though Virginia later reversed this by rejoining the squadron.

Her combat veteran background informed her understanding of both battlefield and support roles, cementing her belief in the critical value of non-combat contributions to collective resilience during extended conflict.