Battle of Liège
First World War – Invasion of Belgium · Liège, Belgium
Summary
The Battle of Liège opened the First World War on the Western Front. The forts encircling the city resisted German attack for more than 10 days. French elements supported the Belgians on the Meuse and conducted offensive reconnaissance without changing the fate of the fortress. German heavy artillery decided the outcome.
Historical context
Germany violated Belgian neutrality and attempted rapid passage toward France. Liège resistance slowed the German advance and delayed entry of French and British troops into the Battle of the Frontiers.
Tactics
Defense relied on twelve Brialmont forts arranged in a belt (~45 km), supplemented by field troops in the intervals. From 10 to 16 August, German siege artillery (305 mm Skoda howitzers and 420 mm Krupp mortars) methodically reduced each fort, while Leman organized cavalry sorties and withdrew field troops from the city occupied on 7 August.
Consequences
The fall of Liège heralded rapid invasion of Belgium and prepared the Battle of the Frontiers. It gave the French army time to deploy Plan XVII and the British to land in France.