At on July 1916 the Battle of the Somme started with explosion of 17 massive 'mines' underneath enemy territory. Lochnagar was the largest of these. It remains "The largest crater ever made by man in anger".
Just behind the lines (But wearing his helmet) a soldier prepares for the anticipated dead. Approximately 96,000 British and Commonwealth soldiers died in the Somme battles which lasted from July until November 1916, total British and Commonwealth casualties including those killed equated to 420,000. From en.wikipedia.org/wiki/Battle_of_the_Somme Image from Volume 2 of "I Was There" page 855 LEST WE FORGET 1916 - 2016
Knee-deep in mud: Wading through a trench on the Somme are Major Beauchamp Magrath (left) of the East Lancashire Regiment, killed on June and Captain Paul Hammond, right, who died on February The other two soldiers are not identified.
Dramatic photographs from WW1 that show the carnage... and courage
Soldiers of the Royal Irish Rifles waiting to join the offensive on the Somme on 1 July, There were British casualties that day - almost died. The battle continued until mid-November, but no other day produced such appalling losses.