This document discusses the use of wargaming as a strategic planning and decision-making tool. It defines wargaming as a disciplined role-playing activity where key decision-makers react to events and test plans against a competitive environment. Wargaming is presented as a way to leverage existing knowledge, promote risk mitigation and organizational learning. It can involve multiple comparable games to determine the most viable options, and include rehearsal games to test plans before execution against adversarial red teams. Companies that use wargaming are said to experience a 40-55% increase in successful plan execution.