Music therapy is becoming increasingly prevalent in rehabilitation programs serving military and Veteran populations in the United States. Music therapy is integrated into interdisciplinary models and positioned to treat brain injury, post-traumatic stress disorder, and other psychological health conditions at military installations and Veteran medical centers nationwide. Phased group music therapy is delivered in a longitudinal treatment model to assist in the rehabilitation of service members and Veterans. Different phases of group music therapy are aligned with a treatment trajectory that exists on a clinic to community continuum to support recovery and reintegration. This article provides a description and case presentations of clinical programming. Information was accessed from patients' electronic medical records, clinical documentation, therapist observation, and patient interviews. Interviews were transcribed and a content analysis was conducted by the authors. Emergent themes from the patient interviews included social relationships, community reintegration and transition, and post-military occupational success. Patients reported that group music therapy provided skill-building opportunities that were helpful for them during military service transitions, specifically active duty to Veteran status. Support skills included rapport-building and enhanced camaraderie. Furthermore, music therapy appeared to bolster peer connections through shared experiences, which decreased isolation, increased socialization, and supported reintegration.