In this final chapter, the authors recommend ways to improve the adaptability of the US military so it is prepared to prevail in the wars of the 21st century. To improve adaptability in doctrine, the recommendations include adopting adaptation as a principle of war, integrating free play in training exercises, and training under sustained analog conditions. To improve adaptability in technology, the recommendations include strengthening rapid-adaptation organizations, chartering a rapid-adaptation skunkworks, and sponsoring an annual rapid-adaptation competition. To improve adaptability in leadership, the recommendations include evaluating adaptability in annual fitness reports, strengthening mission command, reforming professional military education, and sending more officers to advanced civil schooling. The authors also recommend that the Department of Defense expand its focus on talent management, getting younger voices in front of senior leaders, increasing the role of combatant commanders in ensuring adaptability, and chartering a Defense Adaptation Board.