M-114 155mm Towed Howitzer
The M-114 155mm Towed Howitzer was first produced in 1942 as the M1 Howitzer. After WW II it was redesignated as the Howitzer, Medium, Towed 155 mm, M114. It was a mainstay of the Army's field artillery for 40 years, including its use in World War II, the Korean War and in Vietnam.
The M114 was produced as the M114A2 variant by Rock Island Arsenal and was replaced by the M198 howitzer starting in 1982.
The M-114 required a crew of 11 men, had a range of 14 miles, and could maintain a sustained rate of fire of 40 rounds per hour.
3rd Marine Division Marines move an M114 155 mm howitzer into position during construction of a mountain-top fire support base, 1 June 1968.
US Army artillery crew loads an M114 155mm howitzer during a training exercise, 1 September 1975.
USMC artillery crews fire two M114 155 mm Howitzer during Exercise OCEAN VENTURE 84, 20 April 1984.
US Army artillery crews conducting firing exercises with an M114 155 mm howitzer, bottom, and an M110 203 mm self-propelled howitzer, 17 September 1985.
USMC artillery crew moves an M114 into a new firing position at Ft. A.P. Hill, VA, 11 April 1994.
Another image of the M-114 155mm Howitzer in Vietnam is at this link.