Doyle, Arthur Conan: A Visit to Three Fronts. V1. 21 Jan 2011
 

Sir Arthur Ignatius Conan Doyle, DL (22 May 1859 – 7 July 1930) was a Scottish physician and writer, most noted for his stories about the detective Sherlock Holmes, which are generally considered a major innovation in the field of crime fiction, and for the adventures of Professor Challenger. He was a prolific writer whose other works include science fiction stories, historical novels, plays and romances, poetry, and non-fiction.

Extract
In the course of May 1916, the Italian authorities expressed a desire that some independent observer from Great Britain should visit their lines and report his impressions. It was at the time when our brave and capable allies had sustained a set-back in the Trentino owing to a sudden concentration of the Austrians, supported by very heavy artillery. I was asked to undertake this mission.