WHEN I went to France there was no thought in my mind that I should ever write a book on the subject of my experiences in World War One. On my return, however, many friends besieged me for details of the great war, which had come under my observation while serving in the Ambulance Corps on the French front. It was easy to infer from the eagerness of all that real news was in demand, none seeming to tire of asking questions and listening to what I had to say in reply. From these impromptu conversations occurring day after day, I began to realize how much I had really experienced during my stay abroad. Consequently, when urged to write a book for the benefit of the general public, I consented on the theory that the more we Americans know about true conditions in the War Zone the surer we are to win victory from the most ruthless enemy ever known to mankind.