After experiencing combat, many veterans experience internal disorder, conflict, and a sense of normlessness because of the chaos created by war. émile durkheim would say that they are feeling

Emile Durkheim would say that they are feeling Anomie

Explanation:

Anomie is a condition whereby the society lacks moral or ethical standard which may be due to breakdown of law and order, conflict of belief and when there is no unity among the people of the community. The term was used by a French researcher and sociologist Émile Durkheim in his study of sucide. The society where there is anomie will provides little or no moral guidance to individuals.