This report presents statistics regarding U.S. military casualties in the active Operation Enduring Freedom (OEF, Afghanistan), as well as operations that have ended: Operation New Dawn (OND, Iraq) and Operation Iraqi Freedom (OIF, Iraq). It includes statistics on post-traumatic stress disorder (PTSD), traumatic brain injury (TBI), amputations, evacuations, and the demographics of casualties. Some of these statistics are publicly available at the Department of Defense's (DOD's) website; others have been obtained through contact with experts at the DOD.

This report discusses executive authority to authorize force in the crisis involving the Islamic State (IS, also known as ISIL or ISIS), which raised significant concerns for the United States.