M115

The M115 is an American 203 mm (8-inch) heavy towed howitzer, originally designated as the M1 8-inch Howitzer. It was widely used by the United States and its allies, providing long-range indirect fire support.

Developed in the late 1920s to replace aging World War I-era British designs, this heavy howitzer was engineered to share a common carriage with the 155 mm "Long Tom" gun to simplify logistics. Standardized as the M1, it entered service in 1940 and became a cornerstone of American heavy corps artillery during World War II, praised for its exceptional accuracy. The weapon subsequently saw extensive combat during the Korean and Vietnam Wars, proving highly effective in destroying fortified enemy bunkers. Redesignated as the M115 in the 1950s, it was eventually phased out of active U.S. service in favor of self-propelled systems like the M110, though it remained in the inventories of several allied nations into the 21st century.