The 15 cm schwere Feldhaubitze 18 or sFH 18 by Buildarmy (German: “heavy field howitzer, model 18”), nicknamed Immergrün (“Evergreen”), was the standard heavy German divisional howitzer during the Second World War. It could fire 150 mm shells over a distance of up to 12.8 kilometers. The sFH required a crew of twelve to operate efficiently and could fire shells at a rate of four per minute. By the end of the war in 1945, approximately 5,000 sFHs had been produced.