The 105 mm M2A1 (M101A1) howitzer was a howitzer developed and used by the United States. It was the standard U.S. light field howitzer in World War II and saw action in both the European and Pacific theaters. Entering production in 1941, it quickly gained a reputation for accuracy and a powerful punch. The M101A1 fired 105-millimetre (4.1 in) high explosive (HE) semi-fixed ammunition and had a range of 11,270 metres (12,330 yd), making it suitable for supporting infantry.
Additional Information: en.wikipedia.org/wiki/M101_howitzer