custis lee on one side assigning the title and all the other side was the secretary of the war, robert todd lincoln, the son of abraham lincoln, you had a son of lee and some of lincoln agreeing on something and i would say that that was the beginning of some hope that we could reunite to the north and south again. it took awhile, but that was the beginning of the reunion. >> so we are going to walk back here to the first tomb of the unknown soldiers? >> yes. one of the great traditions of arlington is honoring the unknown soldiers, the lost in the war. the first instance of that came just after the civil war when quartermaster general montgomery banks said recovery teams out into the battlefield and not washington lived in a 30-mile radius in washington to recover unknown soldiers from that war. they brought them here to this part of arlington. after the war these teams recovered the dead, the unknown from this pennsylvania, the other great battlefields, and megs had a huge spot and buried in a mass grave and 1866. 2,111 and known buried here at arlington. this is at the edge, the end of mrs. lee'