Frederick William Lanchester, Aircraft in Warfare — Chapter I (1916)
“ It is generally recognised that in its employment in connection with military operations a most valuable property of the flying-machine or aeroplane is its mobility; it is mobile to a degree which can scarcely have been dreamt of in the warfare of the past. When, therefore, we look for uses in co-operation with an army in the field in which the aeroplane may show to advantage, we naturally turn to examine the duties at present fulfilled by the cavalry, hitherto the Arm to be employed wherever mobility is of importance. ”
