Have purchased "French Strategic and Tactical Bombardment Forces of World War 1" by Rene Martel. It is a book I have been looking forward to as my knowledge of the subject is very basic. This 461 page softcover is going to be THE book on the subject for a long time. In actuality, it is the only book specifically concerned with the subject that has been translated to English. Martel traces the formation and development of the French bombing forces from the very modest beginning in late 1914, (at the outbreak of the war, the French had 30 squadrons of aircraft, all devoted to recon and observation), until it's peak at war's end, when the French had some 500 aircraft in the bombing squadrons, evenly split between day bombardment and night bombardment forces. The book is divided by year and includes sections on maritime bombing and action in the Dardanelles and Eastern Front. As far as I have been able to determine, this book is only available as a softcover, but it still is a 'must have' for WW1 aviation buffs. Shop for the best price as listings vary widely.:wink2: -- Al