During a night gas attack the 5th & 6th Batteries on Anzac Ridge were put out of action. Between mid–October and mid-November there were over 1,300 casualties in the Australian Field Artillery alone, and although only a small number, 20, were quickly fatal the effects lasted for years to come. The condition of the worst cases was pitiful with eyes swollen and streaming, voices gone and bodies blistered. Whole battalions came out of the line hoarse.
Following the Twenty-Second 