13h 21min, jul 31, 1917 y - The Third battle of Ypres
The battle of Ypres started in stages, the first stage was the successful attempt to break out of the salient at Messines and take cover in a high ground to overlook Ypres. The next stage was another breakthrough, but it was not possible with heavy rain and drainage systems were destroyed. The result was a muddy battlefield and puddles formed.
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World War I