The Fortnight in September

The Fortnight in September is by RC Sherriff, the author of
Journey's End (1929). Set during the First World War, it had no women in
it, no heroes and no love interest - it was about the hopes and fears of a
group of ordinary men waiting in a dug-out for an attack to begin. It was
based on Sherriff's own letters home, and its success was in part due to
his ability to recreate the trench experience exactly as he had lived it.