| third battle of Ypres 
 
 battle in World War I (1917);
 an Allied offensive which eventually failed because tanks bogged down in the waterlogged soil of Flanders;
 Germans introduced mustard gas which interfered with the Allied artillery
 • Syn:
 Ypres, battle of Ypres
 • Regions:
 Belgium, Kingdom of Belgium, Belgique
 • Instance Hypernyms:
 pitched battle
 • Part Holonyms:
 World War I, World War 1, Great War, First World War, War to End War
 
 
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