The unknown Americans buried there as a symbol for all future and past unidentified service people have never been identified. All were exhumed from foreign soil after their respective wars were over. Decomposition and lack of knowledge about DNA during World Wars 1 and 2 and the Korean War prevents them from being identified then and now. The 4th space, reserved for the unknowns of the Vietnam War, was occupied by a pilot that was identified via mitochondrial DNA in 1998. The space remains as a monument to those in that war that remain unidentified.
Only fragments of their body's. Much of with are or have been returned long after their death.. Also a monument and salute to those who are never returned..
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