Diesel locomotive were classified as DET 1 and DET 2 (). Due to shortage of petrol products during World War I, they remained unused for regular service in Germany. In 1922, they were sold to Swiss Compagnie du Chemin de fer Régional du Val-de-Travers (), where they were used in regular service up to the electrification of the line in 1944. Afterwards, the company kept them in service as boosters till 1965. Fiat claims a first Italian diesel–electric locomotive built in 1922, but little detail is available. A Fiat-TIBB diesel–locomotive "A", of 440CV, is reported to have entered service on the Ferrovie
LMS diesel shunter 1831 LMS diesel shunter 1831 No. 1831 was the first experimental diesel hydraulic shunter of the London, Midland and Scottish Railway (LMS) which pioneered diesel shunting in the UK. It was introduced in 1932, built at Midland Railway's Derby Works. It was nominally a rebuild of a Midland Railway 1377 Class 0-6-0T steam locomotive of the same number, built in September 1892 by the Vulcan Foundry. The frames and running gear of the original locomotive were retained. The experiment was not a success and the locomotive was put into storage in 1936. 1831 was withdrawn from service in September 1939 and