Vatta's War
Vatta's War is a science fiction series by American writer Elizabeth Moon , comprising five books: "Trading in Danger" ( 2003 ) , "Marque and Reprisal" ( 2004 ) ( "Moving Target" in UK and Australia ) , "Engaging the Enemy" ( 2006 ) , "Command Decision" ( 2007 ) , and "Victory Conditions" ( 2008 ) . 
<triplet> Vatta's War <subj> Elizabeth Moon <obj> author <triplet> Elizabeth Moon <subj> science fiction <obj> genre