High Quality Content by WIKIPEDIA articles! 152 mm howitzer M1909/30 (Russian: 152-мм гаубица обр. 1909/30 гг.) was a Soviet 152.4 mm (6 inch) howitzer, a modernization of the 152-mm howitzer model 1909, initially designed by Schneider. It was the most numerous 152 mm howitzer employed by Red Army in World War II.