This was a very honest and colorful account of Hartney's experiences flying with Britain's Royal Flying Corps (RFC) and the United States Army Air Service (USAS) during the First World War. (Hartney was discharged from the U.S. Army with the rank of Lieutenant Colonel, after having commanded the First Pursuit Group in France.)
This book was originally published in early 1940, shortly after the outbreak of the Second World War. From time to time, Hartney prognosticates on what he anticipates the future may bring in terms of the use of air power at that time. He also sheds light on his family and continued involvement in aviation since 1918. This gives the reader more of a fuller sense of the man, who, born Canadian, later became a U.S. citizen.