D.P.

“In the military, when the enemy turned on the enemy, they called it “red on red.” Soldiers didn’t have to pretend to be sad about it.”
― Edward Conlon, Red on Red

“Except that it was no more home, just the place where he had grown up, and that first day back, touring the once familiar places only made him realize that he had already lived close to half his life.”
― David Morrell, First Blood

“I had killed people before, in war and as a member of the New Orleans police department, and I know what it does to you. Like the hunter, you feel an adrenaline surge of pleasure at having usurped the province of God. The person who says otherwise is lying. But the emotional attitude you form later varies greatly among individuals. Some will keep their remorse alive and feed it as they would a living gargoyle, to assure themselves of their own humanity; others will justify it in the name of a hundred causes, and they’ll reach back in moments of their own inadequacy and failure and touch again those flaming shapes that somehow made their impoverished lives historically significant.”
― James Lee Burke, Heaven's Prisoners

“If he had really wanted to control himself, he could have. He simply had not wanted to control himself. To live his way, he had been determined to fight anyone who interfered. So all right then, in a way he had fought for a principle. But it was not that simple, because he had also been proud and delighted to show how good he was at fighting.”
― David Morrell, First Blood