Traumatic Brain Injury (TBI) is a blow or jolt to the head or a penetrating head injury that disrupts the function of the brain. Each year there are a reported 1.7 million civilian brain injuries in the United States. In the military from 2000 through 2012, more than 266,000 service members sustained a TBI. Brain injury has become known as the signature wound of the wars in Iraq and Afghanistan. Most brain injuries are mild, and most people recover in a matter of weeks. BrainLineMilitary.org provides military-specific information and resources on traumatic brain injury to veterans; service members in the Army, Navy, Air Force, Marines, National Guard, and Reserve; and their families.