The U S Air Service in WWI The U. S. Air Service in World War I series: Volume I: The Final Report of the Chief of Air Service AEF and a Tactical History Volume II: Early Concepts of Military Aviation Volume III: The Battle of St. Mihiel Volume IV: Postwar Review For additional AFHSO books on this topic, see the AFHSO Title listing page. See the National Museum of the U. S. Air Force World War I Centenary. See this special study from the Air Force Reserve History Office: First Wings At War: Air Force Reserve in World War I. See this aviation events timeline from the World War I Centennial Commission web site.