The story of Major Charles Whittlesey and his “Lost Battalion” is one of unlikely heroes. The link below is for the American Heritage magazine’s synopsis. It is one of the most concise explanations of the events that occurred in the Charlevaux Pocket of the Argonne Forest in October of 1918.
https://www.americanheritage.com/lost-battalion
Author and historian Robert J. Laplander, one of the leading authorities on the Lost Battalion and Charles Whittlesey has also written an excellent synopsis for the United States World War I Centennial Commission.
https://www.worldwar1centennial.org/index.php/233-lost-battalion.html