On the Western Front, stalemate endured.
The first large-scale use of poison
gas in the conflict - by German forces against French
and Canadian divisions at the 2nd Battle of Ypres
in April 1915 - did not bring the anticipated breakthrough.
In France and Russia, both of which had already suffered horrendous
losses, voices were questioning the extent of Britain's military
commitment to the Allied cause.
Partly to counter such sentiments, and partly to relieve
Russia's military woes in the east, British and French forces
launched a major new offensive on the Western Front in September
1915. At the Battle of Loos
(25 September-8 October), however, British troops were decimated
by German machine-gun fire and suffered heavy losses. About
60,000 men were killed, wounded or captured - in contrast
to only 20,000 German casualties.