At the start of 1915 the Allies and the Germans had established themselves in a line of trenches running from the Channel to the French-Swiss border. Until March 1915, artillery exchanges, sniping and mining operations were the main activities on the British Expeditionary Force’s front.
As both sides settled down for the first winter of the war, the weather proved harder to contend with than the enemy in some sectors. Artillery bombardment rapidly destroyed trenches, which had been built quickly and tended to be simple affairs. The bad weather and the destruction of pre-war drainage ditches also led to widespread flooding. But no matter how cold or wet they were, the soldiers had to remain in the line.
1915 witnessed a number of major battles in World War One, not least at Gallipoli, Ypres and Loos. 1915 was also the year when poison gas (chlorine) was used for the first time.
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