Theory of War - End of Lesson Test (question 7 of 8) Operational art Answer Options A deals with the study of a current military service branch O B. is the development of sound military doctrine based on intensive study of past military actions O C. deals with the study of military history in order to develop a solid basis for military doctrine that complements the experience and operational skill of commanders by describing a flow of action toward objectives OD. deals with the study, theory, and practice of planning, preparing, conducting, and sustaining major operations and campaigns designed to accomplish operational or strategic objectives