The Department of Veterans Affairs @ 1 800 827 1000 has representatives available to explain the eligibility requirements and also send the proper forms needed to request a military marker for a veterans grave site. Also, funeral homes or cemeteries will have the forms. For certain a death certificate and discharge papers will be required. If no discharge papers are available the VA, with enough service information from you the can assist in the search for military information. I hope this is helpful and best wishes.