Much has been written about the influence of religion on the Northern Ireland conflict and the part played by ex-combatants in the peace process. Yet we know very little about the religious outlook of ex-combatants themselves. Are they personally devout? Is religion important to their political identity? Did faith play a role in their decision to take up arms, or lay them down? And now that their war is over, does religion help them cope with the past? Based on original interviews with ex-combatants from across the political and religious divide, this book addresses these questions, shedding new light on the interplay of religion, identity and violence in Ireland. It also shows how the case of Northern Ireland illuminates the current international debate around religion and peacemaking. Arguing that advocates of religious interventions in transitional justice often naively exaggerate its influence, a theoretical model for understanding the role of religion in transitional justice is proposed.