The Western Front remains one of the most iconic, horrifying and controversial aspects of the First World War. This Cambridge Companion is a timely guide to the current state of research into this decisive theatre. Nick Lloyd brings together leading scholars to offer cutting-edge historical surveys combined with provocative and challenging new interpretations. They provide a comprehensive history of the Western Front, from war-planning and mobilisation in 1914, the emergence of a 'modern style' of warfare between 1914 and 1918, the role of coalitions and alliances, morale and the experience of colonial soldiers to the relationship between generals and domestic political leaders, the landscape of battle and the front's subsequent commemoration, remembrance and cultural afterlife. Together, these contributions highlight the seismic and enduring impact of a crucial moment in European history and demonstrate why it continues to attract interest, horror, fascination and debate over a hundred years later.