Heroism is a key characteristic of Cymbeline’s Britons, and it played a crucial role also in the construction of Britain in the period of the play’s composition, although it is an ethos we tend today to associate more with Henry Frederick than with his father, King James. Recent studies of the play explore Cymbeline’s dramatization of these perceived ideological tensions between Henry and his father.1 In this chapter, I want to argue for a far greater degree of accommodation than previous studies allow between Henry’s headstrong heroism and his father’s ambitions for peace. With a focus on Cymbeline, I argue that martial rhetoric in fact served more to support than stand in the way of James’s plans for Britain’s peaceful union, for the play...