Above on the page there are several PDF Operator's Manuals for DAVID BROWN Tractors.
The main agricultural machinery manufacturers in England during the war were David Brown and Fowler. These firms, of course, were not the only ones, but they made the most tangible contribution to peaceful agriculture.
In te UK, the assembly of tractors of the American firms Fordson, Caterpillar and Case was in full swing, the vehicle sets of which were delivered by sea vessels, accompanied by a convoy under the constant threat of an attack by German submarines.
The Committee for Military Agriculture, created during the war, really helped the manufacturers of agricultural machinery and regulated their relationship with each other and with the allied forces, since some of the enterprises, along with peaceful vehicles, began to produce military ones.
The English model of those years is quite interesting - VIG by David Brown. It is undoubtedly a tractor, but if you look closely, you can see the features of a tractor, a pickup, and a light truck.
Powered by a Caterpillar D-4s engine, the machine has been used with equal success as a row-crop tractor and as a RAF airfield tractor.
This versatility made it possible to use it in wartime in various areas of the economy. VIG, like a tractor, dragged a plow, guns, airplanes, etc.
There have never been such universal machines. Of course, an ordinary tractor could do all this, but the VIG was equipped with many additional devices that allowed it to work "competently" - it was designed for this.