Nürnberg was badly damaged by allied bombers during
World War II, and, at the end of the war, all of the Arnold facilities were in ruins. Postwar production continued at a facility in the
Upper Palatinate (Oberpfalz), with the company beginning its slow recovery with the manufacture of window hardware. The postwar operation of the company was under the direction of Max Ernst and Ernst Arnold, son of Karl Arnold. The factory buildings in Nürnberg were rebuilt and the Arnold Company continued to grow. In the postwar period, smaller
model train sizes became the order of the day. In earlier times, model trains had been largely the plaything of the well to do who had enough money to live in houses large enough to support the display of the larger scales of model trains. The growth toward smaller scales had begun in the early 1900s, with
O scale being the first "small" scale. In the 1930s,
HO/
OO scale became the "small" scale. In the late 1940s and 1950s,
TT scale was the "small" scale, allowing for realistic model railroad displays being situated in relatively small areas. Three companies led the TT revolution,
H.P. Products of
Indiana, United States,
Tri-ang of the United Kingdom, and
Rokal of
West Germany. But TT-Scale was not to be the smallest scale in model railroading. Led initially by
Lone Star Toys of Great Britain and
Trix of Nürnberg, there was a movement toward an even smaller scale. Both companies experimented earlier with "floor toys", unpowered model trains designed to be moved about by child power. Lone Star dropped by the wayside after a period of time, but Trix continued experimentation and development of what would be their electric powered Minitrix product line. Arnold was to come up with a workable solution, also. The introduction of Arnold rapido was from scratch because nothing like this had been done before. Arnold was literally establishing what would become
N scale. This is not to say that it was the sole developer of N, but Arnold Rapido was there first. Although Karl Arnold's son, Ernst, was involved with the company, several sources cite the presence of Max Ernst (who remained as Managing Director for over forty years until 1976), as the prime mover behind this new product line. Ernst has been described as a dynamic businessman, the person most responsible for the introduction of the Arnold Rapido product line. Karl Arnold passed on in October, 1946, leaving his son and Herr Ernst as principals in the Company. Much later, an Arnold Sales Manager, Ferdinand Graef, would marry Max Ernst's daughter, Sonja, keeping the Arnold company as a family operation. It would continue to be so until 1995. ==Production phases==