This study is a randomized controlled trial comparing an integrated treatment, Behavioral
Activation + Cognitive Processing Therapy (BA + CPT), to CPT alone among active-duty service
members with posttraumatic stress disorder (PTSD) and comorbid major depressive disorder
(MDD). Participants will complete assessor-administered and self-report measures at pre- and
post-treatment assessments, as well as a 3-month follow-up. Additionally, participants will
complete self-report measures of PTSD and MDD symptoms at each therapy session.