"David Ivanovich Orlov" . . . . . . . . . . . "Russian Empire" . . . . . . . . "1st Don Cossack Division" . . . . . . . . . "David Orlov" . . . . . . "12th Cavalry Division" . "David Ivanovich Orlov" . . . . . . . . . "1840" . . . "1916" . . .