The building up of the Military Wing to fit it for its purpose was not a light task. Skilled officers, skilled men, an adequate supply of the best machines, suitable flying grounds in various parts of Great Britain, a well-staffed central school for training--these were some of the first necessities. After two years, when war came, only four out of the seven squadrons were ready for instant service in France. But the value of this little force was out of all proportion greater than its numerical strength. Through all the difficulties and delays that clog a new movement it had kept a single purpose in view and had worked for it. The great achievements of the Royal Flying Corps during the war may seem to make its early history and early efforts a trivial thing in the comparison. But the spirit was there; and some of the merits of the later performance may be detected in the tedious and imperfect rehearsals, the long hours of duty-flights and experiment, demanding that three-o'clock-in-the-morning kind of courage which is willing to face danger in the midst of a world at ease. In March 1912 Colonel Seely had announced in the House of Commons that there would be required at once for the Military Wing a hundred and thirty-three officers, and for the Naval Wing about thirty or forty officers. It was not proposed at first to teach all these officers at the Central Flying School. They would learn to fly privately, and would go to the school for more advanced instruction. The skilled men required were of many kinds. The most important of these were mechanics, men who had served at full pay in engineering workshops, who had some knowledge of electricity, and could make intelligible sketches of machinery. A list of some other classes whose services were invited proves that though the air service was small its needs were many and complex. Men of the following trades were to be enrolled, by enlistment or transfer, in the Military Wing: blacksmiths, carpenters and joiners, clerks, coppersmiths, draughtsmen, electricians, fitters, harness-makers, instrument repairers, metal-turners, painters, pattern-makers, photographers, riggers, sail-makers, tinsmiths, turners, wheelwrights, whitesmiths, wireless operators, wood-turners. Men of the following minor trades were also invited: cable-jointers, chauffeurs, drillers, dynamo attendants, electric-bell fitters, joiners' helpers, machinists, motor fitters, plumbers' mates, switchboard attendants, tool-grinders, wiremen. Last, a welcome was promised to men above average intelligence whose education at school had reached what is called the Fifth Standard. When an aeroplane glides down to earth as easily as a bird, and comes to rest, a chance onlooker would hardly guess what a world of intricate labour and pains has gone to the attainment of that beautiful simplicity. It is the workshop which gives safety in flight; and because the workshop needs highly skilled men, whose services are in demand, at