From the Nov. 20, 2014 Congressional Research Service report, A Guide to U.S. Military Casualty Statistics: Operation Inherent Resolve, Operation New Dawn, Operation Iraqi Freedom, and Operation Enduring Freedom:

This report presents statistics regarding U.S. military casualties in the active missions Operation Inherent Resolve (OIR, Iraq and Syria) and Operation Enduring Freedom (OEF, Afghanistan), as well as operations that have ended, Operation New Dawn (OND, Iraq) and Operation Iraqi Freedom (OIF, Iraq). This report 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 and others have been obtained through contact with experts at DoD.

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