Here is the whole story -- from the angle of Pershing's Chief of Staff. From the worrying days leading up to the war, with impending crisis ahead and no preparation to meet it; through the dramatic rush of energy and man power to get our troops across; through the trying months of adjustment, discouragement, set-backs, determination to win out on the idea of centralizing the command; then the shift to the command of the Marine Brigade, later to the command of the Second Division, finally to the difficult job of command of the Service of Supply. The result is a well-rounded presentation of the whole history, with enough of critical comment to indicate a certain perspective, with an intensely human touch, with a faculty for marshalling facts and making them interesting. The book is a tremendous tribute to General Pershing. Important for libraries, and for every well-equipped private library of any reader interested in contemporary history.