The DRG Class 24 steam engines were German standard locomotives (Einheitslokomotiven) built for the Deutsche Reichsbahn between 1928 and 1939 to haul passenger trains.

These engines, nickname the 'prairie horse' (Steppenpferd) were developed specially for the long, flat routes in West and East Prussia.

These locos ran with a boiler overpressure of 25 bar (25.5 kgf/cm2; 363 psi), but were rebuilt by DB in 1952.

They were all stabled in Jerichow shed in 1960 and their sphere of operations until 1968 was the branch line network of the Kleinbahn AG in Genthin.

Thirty-four locomotive remained in Poland after the Second World War, where PKP classified them as Oi2.