Intensive Multi-Couple Therapy for PTSD Versus Relationship Education in Military Couples

Inclusion Criteria: * Service member or veteran and a romantic partner willing to participate. * Couple is married or cohabiting for at least 3 months. Couple can be either different or same sex. * Service member/veteran diagnosis of PTSD as determined by the CAPS-5. * Each partner is at least 18 years old. * Both partners able to speak and read English. Exclusion Criteria: * Either partner reports current suicidal ideation severe enough to warrant immediate attention * Current homicide risk meriting crisis intervention for either partner * Current and severe alcohol misuse in either partner warranting immediate intervention * Symptoms of moderate to severe other substance use warranting immediate intervention * Recent (past month) manic episode or psychotic disorder symptoms in either partner * Other psychiatric disorders severe enough to warrant designation as the primary disorder * Evidence of a moderate or severe traumatic brain injury or other cognitive impairment in either partner * Couple is separated or have taken steps to dissolve their relationship * Either partner is currently participating in evidence-based treatment for PTSD (e.g., Prolonged Exposure, Cognitive Processing Therapy, Present-Centered Therapy for PTSD, Eye Movement Desensitization and Reprocessing, Cognitive-Behavioral Conjoint Therapy for PTSD, or Structured Approach Therapy). * Evidence or admission of severe intimate aggression by either partner occurring within the past 6-months.