. . . . . . "4532"^^ . . . . . . . . "Heritage Trilogy is a series of military science fiction books written by Ian Douglas that focus on the United States Marine Corps. It is followed by the Legacy Trilogy and the Inheritance Trilogy."@en . . . . . . . . . . "17205446"^^ . . . . . . "Heritage Trilogy is a series of military science fiction books written by Ian Douglas that focus on the United States Marine Corps. It is followed by the Legacy Trilogy and the Inheritance Trilogy."@en . . . . . . "Heritage Trilogy"@en . . . . . . . "1028024442"^^ . . . . . . . . . . . . . . "11764"^^ . . . . . . . . . . . . . "Heritage Trilogy"@en .