On the morning of April 28th, 1917, my paternal grandfather - born on 5th November, so always went by Guy - was injured at Gavrelle, Arras. He was 18, having added two years to his age in order to volunteer early in 1915 and follow his older brother into the military. There was little incentive to check records too closely in those days. He was with the Royal Marines.
In the early hours of the 28th at 4.25 the attack started and little more was ever heard from 1 RM, piecing together the course of the attack involves much reading around. Many Marines were therefore shot down quickly and the attack began to falter badly. At 7:15 the first news of 1 RM was received at headquarters and that was that a wounded marine of the 4th wave said that the wire was very strong but the others had gone on. No official news was coming back from 1 RM only information from the wounded, the information was then out of date. The truth was 1 RM was now basically wiped out with remnants holding its jumping off trench, isolated pockets of men were trapped behind the German counter attack.