. "1976Z"^^ . . . "American writer" . . . . . "1976Z"^^ . . . "1st Squadron, 4th Cavalry" . . . "Douglas A. Macgregor is a U.S. Army Colonel (retired), author, and consultant."@en . "Macgregor, Douglas"@en . . "Douglas A. Macgregor"@en . . . "United States" . . . .