Traumatic brain injury (TBI) is an important source of morbidity in the Iraq and Afghanistan wars. Although penetrating brain injuries are more readily identified, closed brain injuries occur more commonly. Explosion or blast injury is the most common cause of war injuries. The contribution of the primary blast wave (primary blast injury) in brain injury is an area of active research. Lessons learned from the sports concussion and civilian mild TBI literature are useful. Individuals with TBI and posttraumatic stress disorder require treatment of both conditions. Families and communities need to be cognizant of the needs of these returning veterans.