Between 1914 and 1918, the Western Front passed through some of Europe's most populated and industrialised regions. Large towns including Nancy, Reims, Arras, and Lens lay at the heart of the battlefield. Their civilian inhabitants endured artillery bombardment, military occupation, and material hardship. Many fled for the safety of the French interior, but others lived under fire for much of the war, ensuring the Western Front remained a joint civil-military space.