Guidance for honoring veterans with grave site flags on Memorial Day
1. Check with the cemetery director
Note, as your work involves different types of monuments, your best bet is to work with cemetery management.
2. Know the proper placement
According to the Department of Veterans Affairs’ National Cemetery Administration, flags placed at graves should be erected in a uniform matter, usually one foot, centered and in front of the headstone or grave marker.
https://blog.scoutingmagazine.org/2018/05/22/honoring-veterans-with-gravesite-flags-memorial-day/