This last brings us to the subject of a very valuable sphere of activity of motors in warfare. There is, however, but little to be written on this point, since the general use of cars by staff officers from the commander-in-chief downwards may be taken for granted, and the employment of fast vehicles for scouting purposes and by officers of the Intelligence Department is equally self-evident. For the carrying of dispatches and other such work, the motor cycle is being found extremely useful. This, the lightest class of motor vehicle, is also used in conjunction with its heavier relations. Motor cyclists, who are usually skilled mechanics, are attached to all the heavy motor transport columns, their duties being to scout ahead, to keep the units of the column together, and also to assist in the event of any roadside trouble. Motors of all kinds are extensively used in connection with the flying corps. To each squadron of aeroplanes a number of motors are attached for various duties. Some may act as first-aid machines, and for the carriage of spare parts. Other larger and heavier motors are employed for the carriage of partially dismantled aeroplanes. Others, again, are fitted up as workshops to help in the important work of repairing and keeping in tune the engines and mechanisms of the aeroplanes. As regards other important uses of motors in warfare, brief mention should at least be made of the cars fitted with wireless telegraphy equipments, and portable searchlights, and also of motor field kitchens. CHAPTER VIII THE PROVISION OF MILITARY MOTOR TRANSPORT Systems of Direct Purchase and Subvention Compared--The Advantages of the Latter--The Importance of Standardisation and Workshop Equipment--The Limitations of the Subsidy Scheme. Having decided definitely that a complete system of motor transport must be employed primarily in order to secure greater efficiency and freedom of movement of troops in the field, the next step is to decide upon the best means of securing the availability of the necessary number of suitable vehicles in time of war. Evidently, the simplest procedure would be to depend solely and entirely upon the power of the Government to commandeer or requisition the required supplies.