country here are websites where you can search for who died serving in US wars:
- Nationwide Gravesite Locator database from the US Department of Veterans Affairs, which catalogs burial locations of veterans and their family members in VA national cemeteries, state veterans cemeteries, other military and Department of the Interior cemeteries, and private cemeteries (after 1997) when the grave is marked with a government marker
- Arlington National Cemetery ANC Explorer, a web-based or mobile app you can use to locate gravesites, view gravestone images and more.
- American Battle Monuments Commission database, which includes names of more than 218,000 service members buried or memorialized overseas
- Virtual Vietnam Wall and USS Arizona Memorial on Fold3
- Casualties databases on the National Archives website, covering the Korean and Vietnam wars (you also can use easier-to-search versions on FamilySearch for Korea or Vietnam)
- FamilySearch also has other helpful databases for tracing those who died in service, including Records of Headstones of Deceased Union Veterans and Navy Widows' Certificates 1861-1910 (these collections also will include veterans who died after their service)
- World War II Casualties and World War II Casulaties—Navy, Marines, Coast Guard on Access Genealogy
- Cemetery sites such as Find A Grave, Interment.net and Billion Graves, where volunteers may have recorded inscriptions and/or uploaded photos.