LAY SUMMARY This study looked at the use of dialectical behaviour therapy (DBT) skills group training with military personnel. DBT skills group training teaches coping skills to manage emotions; it has been well researched and used effectively with civilians and Veterans, but less is known about its use with military personnel. The General Mental Health (GMH) clinic receives a large volume of referrals for military personnel who have difficulty with coping skills and managing emotions. On the basis of previous research, a modified DBT skills group therapy program was developed for the clinic to offer an efficient, effective treatment program for these clients in this busy clinic. Military personnel may be a particularly good fit for this type of group-based treatment because they are familiar with working in small group settings. This treatment can also allow for a timelier return to work, minimizing interruptions to military deployments and operations. Study results showed that program participants had lower levels of depression and a greater ability to manage emotions and cope more effectively after the program. Treatment gains were largely maintained at 6-month follow-up. This research suggests that DBT skills group training may be an effective treatment for military personnel.