TO THOSE AT HOME this book is dedicated-to Dad, the best old boy of all; to Mo- ther, the most wonderful woman in the world, and to all the others back home who played the har- dest game of all, the game of wait- ing.In order that they may know more of our life in the A.E.F. on duty and off duty-we have prepared this informal record of the Air Service. If it seems flip- pant or frivolous in most of its pages, we can only tell them that we of the Air Service refuse to take life too seriously, even though it has been rumored that there was a war hereabouts.