Roden 812 Holt 75 Artillery tractor 1:35

With the onset of large-scale hostilities in early 1915, the leadership of the British Army understood very well that the transportation of heavy weapons such as heavy artillery, by horses wearing harnesses, was no longer an efficient method, especially in the off-road conditions of autumn and winter. In view of this, it was decided to limit horse drawn transportation only for light artillery, and to procure tractors, already in use for agricultural purposes before the start of the war, for the movement of heavy weapons.

Soon after the turn of the century, American inventor Benjamin Holt built an agricultural machine with a gasoline internal combustion engine and a chassis running on crawler tracks, which proved to be very successful in design, and was copied not only in the United States, but also in England and France, as well as in some other countries. The vehicle was classified as a "tractor" and was named the Holt 75. Even before the start of the First World, these machines were already being used extensively in agriculture, however, not as yet for any military purposes.