I just finished the book, The Last of The Doughboys by Richard Rubin. The book is excellent to me. It informs the reader about WWI soldiers of the American Expeditionary Forces who lived through the war and lived to be centenarians (those living to be 100 or more). 

The book is researched thoroughly, written at a great pace and keeps the reader interested, while providing moments of thought of what your own family members during​ 1914 to 1919 might have experienced.

As a Genealogists I think everyone interested in this subject area should read it. If so let me know what you think.