A "follow-on mission," Operation Freedom's Sentinel (OFS), was started on January 1, 2015, to "continue training, advising, and assisting Afghan security forces." Operation Iraqi Freedom (OIF) began on March 19, 2003, and was primarily conducted in Iraq. On October 15, 2014, U.S. Central Command designated new military operations in Iraq and Syria against the Islamic State of Iraq and the Levant as Operation Inherent Resolve (OIR). (For more information on war and conflict dates, see CRS Report RS21405, U.S. Periods of War and Dates of Recent Conflicts , by [author name scrubbed].) Daily updates of total U.S. military and civilian casualties in OIF, OEF, OND, OIR, and OFS can be found at the Department of Defense's (DOD's) website, at http://www.defense.gov/news/casualty.pdf . Traumatic Brain Injury

Many statistics on traumatic brain injury (TBI) are available to the public, at the Defense and Veterans Brain Injury Center, at http://dvbic.dcoe.mil/dod-worldwide-numbers-tbi .
This report presents statistics regarding U.S. military and civilian casualties in the active missions Operation Freedom's Sentinel (OFS, Afghanistan) and Operation Inherent Resolve (OIR, Iraq and Syria) and, as well as operations that have ended, Operation New Dawn (OND, Iraq), Operation Iraqi Freedom (OIF, Iraq), and Operation Enduring Freedom (OEF, Afghanistan). It also includes statistics on post-traumatic stress disorder (PTSD), traumatic brain injury (TBI), and amputations. Some of these statistics are publicly available at the Department of Defense's (DOD's) website and others have been obtained through DOD experts.
For more information on pre-2000 casualties, see CRS Report RL32492, American War and Military Operations Casualties: Lists and Statistics, by [author name scrubbed] and [author name scrubbed].
This report will be updated as needed.