CDC. 2015. “Vital Statistics in the United States,” 1963-1967. http://www.cdc.gov/nchs/products/vsus.htm; CDC. 2019. “Underlying Cause of Death,” Compressed Mortality File, Mortality for 1968-1978 and Mortality for 1979-1998. https://wonder.cdc.gov/mortsql.html; CDC. 2020. “Underlying Cause of Death, 1999-2019,” Detailed Mortality Tables. Accessed using CDC WONDER Online Database. https://wonder.cdc.gov/ucd-icd10.html; U.S. Department of Defense. 2021. “Conflict Casualties.” Accessed using Defense Casualty Analysis System. https://dcas.dmdc.osd.mil/dcas/pages/casualties.xhtml. Note: Data represents soldiers killed in action on the battlefield as of January 27, 2021. Estimates do not include soldiers who died of wounds or suffered non-hostile deaths.