Storming the breaches of a fortress was the most perilous of military undertakings. After setting out the operational nature and challenges of British sieges in the Peninsular War, this chapter explores the cultural and emotional history of the British storming of besieged fortress-towns in the Napoleonic era, especially in Spain, revealing a cult and spectacle of storm that took hold in this epoch, borne of a reinvigoration of martial honour codes, ideals of heroic and patriotic self-sacrifice, and romantic and sublime sensibilities. British soldiers’ writings on their motivation for storming reveal a complex and interactive mix of remunerative incentives of promotion and plunder on the one hand, and bravery, esteem, honour and patriotism, on the other, with soldiers driven by both individual and collective values and loyalties. Further, this chapter analyses how soldiers managed fear and emotion in the impending eye of the storm, and the importance of sentimental culture in how they responded to the trauma and devastating loss of comrades in the aftermath.