The surgeons in your picture are very highly paid skilled craftsmen but they didn't sacrifice their lives to protect their country. A admirable skill but not a noble person (unless they always do it all for virtually free and risk their lives doing it).
Soldiers risk paying the ultimate price for very poor reward and no fame. The guards honor those that paid the ultimate price and we don't even know who or where they are. Only the best of the best are worthy of honoring the ultimate sacrifice.
Random
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Joe
See Porsche run. Run, Porsche, Run:
`87 911 Carrera