Explain how forensic science to identify the body of pfc gordon?

Forensic Science has helped in so many ways that today is involved in every subject in life, PFC Gordon´s case was a clear example of the advancements of science when after 70 years, a body was recognized using a DNA test, that was applied to several bodies before with no success, thanks to a nephew research and the permission of a german commission and the France goverment, he could compare the dna from the saliva of eight other Gordon´s nephews, with the "Unknown German" at the german ossuary in France. 

That is true! many fish species traveled to the u.s. because of it.