This document provides a summary of the Army Operations & Doctrine SMARTbook, which serves as a reference guide for FM 3-0 Operations (2008) and the six warfighting functions. It begins with an introduction to the operational environment and influences on operations. It then discusses unified action with other military and civilian organizations. The next section covers the spectrum of conflict and operational themes like peacetime engagement, limited intervention, and major combat operations. It aims to represent the essentials of warfighting in a concise format.