The Second World War saw the conscription and mobilisation of around 5.8 million British men for military service. Very few had any prior military experience or training. This chapter looks at some of the letters, diaries, and memoirs written by men serving in the Army to consider how they tried to construct a new, militarised sense of identity, and the emotional styles that they used to communicate this. Letters, diaries, and memoirs provided a resource for both the expression of emotions that could not be articulated in the military community, and for the process of fashioning a new militarised selfhood. Drawing on work undertaken by historians working on the construction of selfhood, the chapter examines a range of these documents to consider the ways that men constructed and articulated this new militarised identity, and the emotional styles that they utilised to do so. However, war provided multiple challenges to these new, hybrid, identities, none more so than the threat of death, or the death of friends and comrades. The chapter concludes by considering the emotional styles that some men used to record their encounters with death, and the ways that these encounters could destabilise their new, militarised, selfhoods.