In due course we shall have many volumes about him: his life, his teachings, his writings, his great deeds will be studied in minutest details as long as that civilization endures which he did so much to preserve to mankind. But just now, while all hearts are overflowing with gratefulness to him, it may be--I cannot help thinking--as valuable to us to know a little about him as it will be for us to know a great deal about him later on. My sources of information are mainly French; and notable among them is a work recently published in Paris: "Foch, His Life, His Principles, His Work, as a Basis for Faith in Victory," by Rene Puaux, a French soldier-author who has served under the supreme commander in a capacity which enabled him to study the man as well as the General. French, English and some few American periodicals have given me bits of impression and some information. French military and other writers have also helped. And noted war correspondents have contributed graphic fragments. The happy fortune which permitted me to know France, her history and her people, enabled me to "read into" these brief accounts much which does not appear to the reader without that acquaintance. And distinguished Frenchmen, scholars and soldiers, including several members of the French High Commission to the United States, have helped me greatly; most of them have not only close acquaintance with General Foch, having served as staff officers under him, but are eminent writers as well, with the highest powers of analysis and of expression. Lieutenant-Colonel Edouard Requin of the French General Staff, who was at General Foch's side from the day Foch was made commander of an army, has been especially kind to me in this undertaking; I am indebted to him, not only for many anecdotes and suggestions, but also for his patience in reading my manuscript for verification (or correction) of its details and its essential truthfulness. And I want especially to record my gratefulness to M. Antonin Barthelemy, French Consul at Chicago, the extent and quality of whose helpfulness, not alone on this but on many occasions, I shall never be able to describe. Through him the Spirit of France has been potent in our community. Thus aided and encouraged, I have done what I could to set before my countrymen a sketch of the great, dominant figure of the World War. The thing about Foch that most impresses us as we come to know him is not primarily his greatness as a military genius, but his greatness as a spiritual force. Those identical qualities in him which saved the world in war, will serve it no less in peace--if we study them to good purpose. As a leader of men, his principles need little, if any, adaptation to meet the requirements of the re-born world from which, we hope, he has banished the sword.