“…The clear link between childhood trauma and post-deployment increase in depression symptoms (Low-increasing trajectory membership), even with the inclusion of combat exposure, PTSD symptoms and social support at homecoming, supports the notion that early adversity is related to the course of depression (Jaworska-Andryszewska and Rybakowski, 2019; Spinhoven et al, 2011). Indeed, the fact that a rise in depression symptoms is seen in the wake of deployment in this trajectory, suggests that childhood trauma might act as a stress sensitizer to increase the risk of depression following deployment (Bandoli et al, 2017;Cabrera et al, 2007;Dorresteijn et al, 2019;Hammen et al, 2000;Rudenstine et al, 2015). However, we found no interaction between childhood trauma and combat exposure, indicating that it might not be the interaction between childhood trauma and combat exposure per se that explains the rise in depression symptoms for this group, but childhood trauma in combination with the general toll of deployment.…”