Those of you who have ancestors who may have been buried in a military cemetery may want to check out the US Department of Veteran Affairs Nationwide Gravesite Locator. If your search is successful, you can find the location of a grave down to section and grave number and even get a map of the cemetery.
The search for burial locations of veterans and their family members encompasses VA National Cemeteries, state veterans cemeteries, various other military and Department of Interior cemeteries, and for veterans buried in private cemeteries when the grave is marked with a government grave marker.
The Nationwide Gravesite Locator includes burial records from many sources. These sources provide varied data, and some searches may contain less information than others. Information on veterans buried in private cemeteries was collected for the purpose of furnishing government grave markers, and for those there is no information available for burials prior to 1997.
Follow this link to get to the search page: http://gravelocator.cem.va.gov/j2ee/servlet/NGL_v1