Any account of the working and organization of a unit in the field, composed of mechanically propelled vehicles, would be incomplete unless it contained a description of the mobile repair workshops which form such an important part of it. So vital are they that without their aid, and the skilful application of the tools they embody, the Supply Column—if such, for example, be the nature of the unit—would become hopelessly crippled and inefficient as a natural course of events. The question will possibly arise in the reader’s mind, "How are the two hundred odd motor-lorries, cars, ambulances, and motor-cycles attached to a Division whilst on service at the front, and which from the General’s car to the machine of the motor-cyclist dispatch rider are all of necessity subjected to such hard wear and tear, maintained in a state of efficiency and ’running order’?" I have alluded briefly to the workshops of the —— Indian Cavalry Division Supply Column, and in this chapter I shall endeavour to give a more or less complete description of them—the work they perform and the results they achieve in the general scheme of things. The workshop section of a Cavalry Supply Column has an artificer personnel made up of fitters, turners, blacksmiths, electricians, and carpenters—the latter known in Army parlance as "wheelers." The equipment consists in four mobile workshops and four store lorries. Dealing firstly with the workshops themselves: the type of lorry employed is usually a Silent Knight Daimler or Leyland, propelled by a 40-h.p. engine. Surmounting the chassis is a platform, on which is erected a four-sided and closed-in body; the two sides are made so that they can be opened out at will and secured horizontally by wood supports. The top half of each side, opening upwards, forms an extension to the roof, and the lower half, being let down, extends the platform or floor-space. The back and front are fixed vertically upright, the latter immediately behind the driver’s seat. Inside the body on the wooden platform are mounted a lathe, drilling machine, tool-grinding machine, also fitter’s bench and vices, together with the accompanying small hand tools. A petrol engine direct coupled to a dynamo drives the lathe, drilling machine, etc. Such, briefly, is the arrangement of the standard mechanical transport mobile workshops. Our Workshops Officer, however, was not satisfied and sought to improve upon it. This he has accomplished in the following way. In the first place he has made structural alterations to the workshop lorry bodies so as to take fuller advantage of the possible floor-space. To do this he has extended the front end of the body from the back of the driver’s seat to the dashboard of the lorry. Secondly, he has eliminated the stationary petrol engine, and instead employs the engine in the lorry chassis to drive the lathe, drilling machine, and other machine tools. The system