Be very wary of thi kind of programs, with edited and selected interviews. They tend to provide the ants eye-level view, what appears right to the seargeant's point of view may not appear so from the division, corps, army point of view. Skepticism is the rule.
And congratulations for a post with no bold letters, different sizes, extravagant use of colour...

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"Do you mean the Asiatic hordes driven forward under the lash?
Oh, sorry, those were the Persians described by Herodotus in the 5th Cent BC!"