Engineers as the ROD 2-8-0. Altogether, 521 of these ROD locomotives were built during the war. After the war, large numbers of these were purchased by the LNWR and GWR, while some were also sold to a private Australian coal company, J&A Brown in New South Wales. Altogether, 273 were purchased by the LNWR during the early 1920s. Other successful 2-8-0 designs were built in the UK. The classes O1 and O2 were introduced by Nigel Gresley of the Great Northern Railway in 1913 and 1918, respectively, and the Class 7F by Henry Fowler of the Somerset and Dorset Joint Railway in 1914. Whilst most British 2-8-0 designs were intended for heavy freight, the GWR 4700 Class were designed for heavy mixed-traffic work, but were initially employed aminly on fast overnight freight trains; later they were used on express excursions in the summer. The most successful British 2-8-0 class was the Class 8F, designed in 1935 by William Stanier for the London Midland and Scottish Railway. By 1946, 852 had been built. During the Second World War, the War Department originally chose the class 8F as its standard freight locomotive, and large numbers of them saw service overseas, notably in the Middle East. The class 8F was superseded after 1943 by the cheaper WD Austerity 2-8-0 for war service. A total of 935 of these were built and again, many saw service overseas. United States In the United States, only a few railroads purchased Consolidation types when Baldwin Locomotive Works first introduced its version. Even the Baltimore & Ohio railroad, which eventually had nearly 180 locomotives in regular service by 1885, did not purchase any of this type until 1873. The Buffalo, Rochester and Pittsburgh Railway, which eventually became part of B&O, purchased 15 of this type from Brooks Locomotive Works in 1883. The 2-8-0 design was given a major boost in 1875, when the Pennsylvania Railroad made it their standard freight locomotive, and 1875 was also when the Erie Railroad began replacing its 4-4-0s in freight service with 2-8-0s. The railroads had found that the 2-8-0 could move trains twice as heavy at half the cost of its predecessors. From a financial standpoint at the time, the choice of the 2-8-0 as new freight locomotive was therefore clear. The S160 Class of the United States Army Transportation Corps was built by American manufacturers and was designed for use in