This edited collection focuses on the negotiation of national, geographic and cultural identities during the Second World War among the constituent countries of the United Kingdom. Adopting a four nations approach, it contributes to our understanding of how pluralistic identities within the multinational state of Britain informed the functioning of Britishness during the conflict. In particular, it explores the ways in which Wales, Scotland and England related to the overarching concept of Britishness and analyses the relationships between Britain and the island of Ireland. This volume addresses wartime Britain as both a site of cultural contestation and of shared experience, exploring what «fighting for Britain» meant for those who served in the British armed forces as well as for those who did not fight in active combatant roles.