At first the strategy worked, as the Germans were confused and disorganised by the preliminary bombardment. But the British did not pursue the Germans as quickly as they should have. Rain began to drench the area in one of the wettest summer and autumn period in years, in a low-lying area where years of fighting had destroyed the land drainage system. Soon the Allied forces became bogged down in the mud, and the British only managed to gain a few miles during the following months, finally gaining the ridge of Passchendaele before winter forced an end to the fighting. For the loss of several hundreds of thousands of men,<ref>http://www.bbc.co.uk/history/worldwars/wwone/battle_passchendaele.shtml</ref> the British achievement was to gain the heights around the Ypres Salient, which meant the area became relatively safer - at least for a few short months until the German Spring Offensive of March, 1918. | At first the strategy worked, as the Germans were confused and disorganised by the preliminary bombardment. But the British did not pursue the Germans as quickly as they should have. Rain began to drench the area in one of the wettest summer and autumn period in years, in a low-lying area where years of fighting had destroyed the land drainage system. Soon the Allied forces became bogged down in the mud, and the British only managed to gain a few miles during the following months, finally gaining the ridge of Passchendaele before winter forced an end to the fighting. For the loss of several hundreds of thousands of men,<ref>http://www.bbc.co.uk/history/worldwars/wwone/battle_passchendaele.shtml</ref> the British achievement was to gain the heights around the Ypres Salient, which meant the area became relatively safer - at least for a few short months until the German Spring Offensive of March, 1918. |