Killing versus witnessing trauma: Implications for the development of PTSD in combat medics.

Killing in combat uniquely predicts elevated PTSD symptomatology among military veterans. This study investigated the effects of combat killing in a sample of 345 U.S. Army combat medics who had recently returned from operational deployments to Iraq or Afghanistan. Combat medics provide frontline medical care before, during, and after battles but also fight alongside other soldiers when under attack. Attempting to kill in combat was a significant predictor of PTSD symptomatology even after accounting for passively witnessing trauma in fellow soldiers. Medics may be well prepared to cope with the passive experiencing and witnessing of war-zone trauma, but may benefit from training to cope with the negative consequences of taking actions to kill.