"This report collects statistics from a variety of sources on casualties sustained during Operation Enduring Freedom (OEF), which began on October 7, 2001, and is ongoing. OEF actions take place primarily in Afghanistan; however, OEF casualties also includes American casualties in Pakistan, Uzbekistan, Guantanamo Bay (Cuba), Djibouti, Eritrea, Ethiopia, Jordan, Kenya, Kyrgyzstan, the Philippines, Seychelles, Sudan, Tajikistan, Turkey, and Yemen. Casualty data of U.S. military forces are compiled by the U.S. Department of Defense (DOD), as tallied from the agency's press releases. Also included are statistics on those wounded but not killed. Statistics may be revised as circumstances are investigated and as records are processed through the U.S. military's casualty system. More frequent updates are available at DOD's website at http://www.defenselink.mil/news/ under 'Casualty Update.' A detailed casualty summary of U.S. military forces that includes data on deaths by cause, as well as statistics on soldiers wounded in action, is available at the following DOD website: http://siadapp.dmdc.osd.mil/personnel/CASUALTY/castop.htm. NATO's International Security Assistance Force (ISAF) does not post casualty statistics of the military forces of partner countries on the ISAF website at http://www.isaf.nato.int/. ISAF press releases state that it is ISAF policy to defer to the relevant national authorities to provide notice of any fatality."
CRS Report for Congress, R41084