Ferrell's book was a logically-organized read on what I personally believe is the least-known campaign in American military history. My key takeaway is the Meuse-Argonne Campaign's relevance to today: mobilization and tactics. During WW1, the American muscle was flexed and likely generated the success needed. However, following the war, little was done to move forward with the military as an institution. Now, after an era of persistent conflict in Afghanistan and Iraq, similar characteristics begin to unfold, in both manning and tactics.
I like how the book is organized, from pre-war through post-war. However, several vignettes felt short or misplaced in the greater context. The maps helped, but like most military history, the reader needs context to know what they're looking for. The book touched from the tactical to operational to strategic levels of war with varying degrees of detail.
For the size of the book, 156 pages, I knew I wouldn't be getting a deep-dive. A few other recent books capture that level and the page counts are clear indicators. That said, "America's Deadliest Battle" is a great, and recommended read for those with a limited knowledge of the Meuse-Argonne Campaign.