The Battle of Loos started in September 1915. It was the first time Lord Kitchener, Secretary of State for War, used armies of volunteers in a major attack - around 30,000 Scots took part in the Battle. It was also the first time the British army used poison gas as a weapon.
The attacking British soldiers had almost no cover and were in full view of the German machine gunners who cut down soldiers in their thousands.
Battalions from every Scottish regiment fought in the Battle of Loos and suffered huge numbers of casualties. Of the 21,000 killed, over 7,000 were Scottish soldiers. Almost every town and village in Scotland was affected by the losses at Loos.