Book excerpt: This book explores changes in emotional cultures of the early modern battlefield. Military action involves extraordinary modes of emotional experience and affective control of the soldier, and it evokes strong emotional reactions in society at large. While emotional experiences of actors and observers may differ radically, they can also be tightly connected through social interaction, cultural representations and mediatisation. The book integrates psychological, social and cultural perspectives on the battlefield, looking at emotional behaviour, expression and representation in a great variety of primary source material. In three steps it discusses the emotional practices in the army, the emotional experiences of the individual combatant and the emotions of the mediated battlefield in the visual arts.