While modern sources and books have been used as well, this book draws heavily on studies of original drawings and analysis of historical reference material from the time period such as National Advisory Committee for Aeronautics (NACA) reports, Royal Aircraft Establishment (RAE) Reports and Memoranda (R&M), British Air Board data from 1917 such as Performance Charts of Aeroplanes, Seaplanes & Ship Aeroplanes, Royal Society lectures, technische Berichte der Flugzeugmeisterei (TB), Bau- und Liefervorschriften der Inspektion der Fliegertruppen (BLV) design rules, Inspektion der Fliegertruppen (Idflieg) documents and letters and so-called Baubeschribungs. In addition, articles from contemporary magazines and periodicals such as Zeitschrift f�r Flugtechnik und Motorluftschiffahrt (ZFM), Der Motorwagen, Flight magazine, Flugsport and books from the time period such as Frederick Lanchester's Aerodynamics, Aloys van Gries Flugzeugstatik and Gustave Eiffel's The Resistance of the Air and Aviation have also provided useful information. Added to this are results and data from the Modellversuchsanstalt f�r Aerodynamik (G�ttingen), NACA, Eiffel and Junkers wind tunnels have also been used in the analysis. In addition, MIT Professor Mark Drela's simulation program Xfoil has also been used to generate data for comparison of a number of different WW1 era wing profiles at varying Reynolds numbers. In addition to anecdotal data from the time period, the chapters detailing handling characteristics build on interviews and essays from pilots of modern replicas such as Mikael Carlson and Javier Arango. The simulations results that form the core of this book have all been generated by a comprehensive C++ simulation program (circa 6000 lines of code) derived from the author's master's thesis in aerodynamics and flight mechanics. The book also contains a description of this simulation model and how the aircraft models used were tuned and in addition, also describes how the validation of the simulation model was done. For more information, see author's website: https: //militaryaircraftperformance.com/