Noun: 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
- Battle of Passchendaele, Ypres, battle of Ypres
Type of: pitched battle
Part of: First World War, Great War, War to End War, World War 1, World War I, WWI
Encyclopedia: Third battle of Ypres