Now it can be told

the long version

"In this book I have written about some aspects of the war which, I believe, the world must know and remember, not only as a memorial of men's courage in tragic years, but as a warning of what will happen again--surely--if a heritage of evil and of folly is not cut out of the hearts of peoples. Here it is the reality of modern warfare not only as it appears to British soldiers, of whom I can tell, but to soldiers on all the fronts where conditions were the same."