Soldiered Who Murdered Afghan Civilians Suffered TBI in Iraq

The Army sergeant accused of massacring 16 Afghan civilians suffered a traumatic brain injury (TBI) in Iraq in 2010 when his vehicle rolled over.  It is believed that TBIs might increase the risk of subsequent violent behavior because of damage to the prefrontal cortex.

Also, troops are at higher risk of mental illnesses like post-traumatic stress disorder (PTSD) on subsequent deployments than on their first deployment.  This soldier was on his fourth deployment, after three in Iraq.