We need to remain ethical in what we purchase and where it comes from. Military archaeology should respect the remains of fallen soldiers from all countries. I have no issues with collecting and excavating battle sites legally as long as any time human remains are uncovered they be catalogued and turned over to proper authorities for identification and honourable burial.
There are guys on this forum who engage in digging up battlefields, most notably in the former Eastern front areas of WWII. I know from personal correspondence with a couple of them that they try to act respectfully and do report finds of human remains. Not all are ethical in their search for lucrative finds. We should bear this in mind and question where we obtain any battlefield relics.
Here is the link to the article.
Nazi grave robbers stealing medals, equipment and BODY PARTS to sell | Mail Online
Best to all.