Diesel locomotive Dv12s. In the 21st century series production standard gauge diesel–hydraulic designs include the Voith Gravita, ordered by Deutsche Bahn, and the Vossloh G2000, G1206 and G1700 designs, all manufactured in Germany for freight use. Steam-diesel hybrid locomotives can use steam generated from a boiler or diesel to power a piston engine. The "Cristiani Compressed Steam System" used a diesel engine to power a compressor to drive and recirculate steam produced by a boiler; effectively using steam as the power transmission medium, with the diesel engine being the prime mover The diesel-pneumatic locomotive was of interest in the 1930s because it
Baldwin Locomotive Works which boosted demand for their coal-fired steam locomotives while acquisition of EMD's Diesel locomotives was in its most restricted period. In 1943 Baldwin launched its belated road Diesel program, producing a prototype "Centipede" locomotive which was later rebuilt to introduce their first major product in the postwar market. During World War II Baldwin's contributions to the war effort included not only locomotives and switchers but also tanks. Baldwin was one of the manufacturers of several variants of the M3 tank (M3 Lee, M3A2, M3A3, M3A5) and later the M4 Sherman. A Baldwin subsidiary, the Whitcomb Locomotive Company, produced hundreds of