Wednesday 2nd May 1917
Your correspondent has been speaking on the blower with the adjutant of the 7th Battalion. It seems they are expecting to go into action early tomorrow morning near the village of Chérisy (between Fontaine-lès-Croisilles and Vis-en-Artois) as part of another major attack on what will be the twenty-fifth day of the Battle of Arras. A Company will be on the right of the attack and D Company on the left, with B Company in support and C Company in reserve.
In this attack every man will carry a flare. This is designed to ensure that the Royal Flying Corps overhead can see how far the attack has progressed. A klaxon horn will sound from battalion headquarters when flares are to be lit by those soldiers in the front line. This is a novel idea, though doubt has been expressed to me by some veterans as to whether it is practical for men engaged in heavy fighting to listen for a klaxon and light a flare as well as attack the enemy and defend themselves against attack.