Book excerpt: How did WWI affect the love lives of ordinary citizens and their interactions as couples? This book focuses on how dramatic changes in living conditions affected key parts of the life course of ordinary citizens: marriage and divorce. Innovative in bringing together demographic and gender perspectives, contributions in this comparative volume draw on newly available micro-level data, as well as qualitative sources such as war diaries. In a first exploration intended to incite further research, it asks how patterns of marriage and divorce were affected by the war across Europe, and what the role of enduring change - or lack thereof - in gender relations was in shaping these patterns.