Per the Veteran Legacy Memorial cite:
“VLM is an online memorial that honors nearly 10 million Veterans interred in VA National Cemeteries, VA grant-funded cemeteries, DoD-managed cemeteries (including Arlington National Cemetery); U.S. Park Service National Cemeteries, and thousands of private cemeteries where Veterans have received a VA-provided gravesite marker since 1996.“
Click the link for the VLM website