The concluding chapter synthesizes insights from the individual chapters, identifying six overarching lessons: civilian control of the US military is complex and understudied; norms are essential for healthy civil-military relations; the relationship between society and the military is less than healthy; partisanship is corroding civil-military relations; public scrutiny of the military is essential to military effectiveness; and the fundamental character of civil-military relations is changing. In turn, it proposes several questions for future research, suggesting that more could be known about public accountability of military activity; the nature and measurement of military politicization; and changing actors and roles in civil-military relations.