Thank you again for your responses: Just to set the record straight....
* I have no plans of digging a grave for ALL the above reasons and then some.
* I know of someone who said that they had come upon something that looked like it was a grave, and they put a shovel in it. My first response was very negative (I was vocal). I have just ordered a F75 and it has been years since I've been in the woods. Nevertheless, If there is a depressed area with no markings, I would still be hard pressed to dig, not wanting to disturb a grave. As a pastor, I am fully aware of the sacredness of a tomb. HOWEVER, I would detect around the area as one of the responses to my question shared. I've got access to some woods that could be battle fields or camps (central Va.) I look forward in checking it out soon.
* The reason I asked about the law, I would hate to dig and discover that there are scared remains.
Thanks for sharing.