The Battle of Loos formed part of a wider offensive conducted by both
French and British Forces in September 1915. The British First Army,
under the leadership of General Haig, were to break through the German
line at Loos thanks in part to their superior numbers, while other
operations were to achieve a similar result in Champagne and at Vimy
Ridge. Due to lack of artillery the Loos attack was planned to be
preceded by a massive gas attack. Chlorine gas would hopefully entirely
overcome the Germans inadequate gas masks and lead to a swift
breakthrough. Unfortunately all did not go to plan. First some of the
gas was blown back into the British trenches causing over 2,000
casualties. Then when the assault itself took place the attackers were
met by fierce German resistance, none more so than at Hill 70 where the
German defenses were strong. Despite many waves of attack, very few
troops made it into enemy trenches. After a few days the attack had to
be called off. It had cost 60,000 British casualties for virtually no
gain. Rudyard Kipling's son John, serving with the Irish Guards, was
also lost.