Many people and agencies played an important role in gathering material for this book. To mention all of them would be to write yet another book. All are identified in the footnotes. They all have my gratitude, but I wish to single out a few agencies and people for special notice.
Brig. Gen. Thomas Griess, U.S. Army, is one of America's leading military historians. I wish to thank him for his example, inspiration, and confidence. Mrs. Marie T. Capps, USMA Library and Archives, provided outstanding assistance. Col. Roger H. Nye, U.S. Army, provided me with insights on Carl A. Spaatz, the military academy, and officer education. The Air University Library at Maxwell Air Force Base, Alabama, is a unique institution and a fine place to do research on any dimension of the history of airpower. I wish to thank Mr. Robert Lane and his staff for their help, which was essential to the completion of this book.
Located with the Air University Library is the USAF Historical Research Center, a subordinate unit of the Headquarters USAF Office of Air Force History. Mr. Harry Fletcher, whose long experience with the archives and deep knowledge of the Luftwaffe were crucial to me, is worthy of special note. The oral history collection at the USAF Historical Research Center was an indispensable asset. It has been long served by two historians whose status in the profession is inadequately noted, Dr. James C. Hasdorff and Mr. Hugh N. Ahmann. The center is especially well served by Mrs. Judy G. Endicott, Mr. Pressley Bickerstaff, and