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  • M114 155mm (155mm Howitzer M1) Towed 155mm Heavy Howitzer

    The 155mm M114 Howitzer began life in World War 2 as the M1 before seeing a name change in 1962 - it has served over 35 nations worldwide.

     Updated: 5/10/2017; Authored By Staff Writer; Content ¬©www.MilitaryFactory.com

    Prior to its use of the M198 howitzer of 1979, the United States military (and many of its allies) relied on the World War 2-era M114 towed howitzer to fulfill its 155mm long-range artillery requirement. The weapon served into the Korean War (1950-1953) and across the campaigns of the Vietnam War (1955-1975) before seeing formal retirement with American forces. Design work on the weapon began in 1939 and spanned into 1941 to which the system cleared its requisite trials before being adopted into service. Production spanned from 1941 into 1953 to which some 10,300 units were eventually produced by the Rock Island Arsenal stateside and additional examples appearing under license elsewhere. The M114 still serves in some armies today (2013). Notable current operators include Afghanistan, Argentina, Brazil, Iran, Iraq, South Korea, Lebanon, Pakistan, Philippines, Taiwan, Thailand, Turkey, Venezuela, Vietnam, Indonesia and Malaysia. Notable former operators became Austria, Belgium, Canada, Croatia, Denmark, France, Greece, Israel, Italy, Jordan, Libya, Norway, Netherlands, Portugal, Saudi Arabia, Singapore and Spain (see operators listing below for complete list).

    The origin of the M114 actually lay in an initiative by the US Army to design and develop a modern carriage system for its aged M1918 155mm guns. The M1918 was nothing more than a copy of the World War 1-era French Canon de 155 C modele 1917 Schneider system which was procured in number by the American military. When it was decided against modernizing the older M1918 guns in this way, a new gun system was developed as the M1. The carriage became a split trail type and the gun was coupled to a hyrdopneumatic recoil system. The breech incorporated a two-step, "slow-cone" interrupted screw. The gun mounting allowed for an elevation of -2 to +63 degrees and traversal of 25-degrees right or left. The weapon entered production as the 155mm Howitzer M1. It was not until 1962 that the now-modified M1A1 was redesignated to the M114/M114A1.

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    M114 155mm (155mm Howitzer M1) Technical Specifications

    Service Year: 1941
    Type: Towed 155mm Heavy Howitzer
    National Origin: United States
    Manufacturer(s): Rock Island Arsenal - USA
    Production: 10,300

    Design (Crew Space, Dimensions, Weight, and Systems)

    Operating Crew: 11
    Length: 23.95 feet (7.30 meters)
    Width: 7.87 feet (2.40 meters)
    Height: 5.91 feet (1.80 meters)

    Operating Weight: 6 tons (5,800 kg; 12,787 lb)

    Nuclear / Biological / Chemical Protection: None
    Nightvision Equipment: None

    Installed Power and Standard Road Performance

    Engine(s): None. This is a towed artillery piece.

    Engagement Range: 9 miles (14 km)

    Armament and Ammunition

    1 x 155mm gun barrel

    Dependent on ammunition carrier. HE, Smoke, Chemical, Illumination and Training rounds available.

    Global Operators / Customers

    Afghanistan; Argentina; Austria; Brazil; Cambodia; Cameroon; Canada; Chile; Croatia; Denmark; Ecuador; France; Greece; Iran; Iraq; Israel; Italy; Jordan; Lebanon; Libya; Norway; Netherlands; Pakistan; Portugal; Philippines; Saudia Arabia; Serbia; Singapore; South Vietnam; South Korea; Spain; Taiwan; Thailand; Turkey; Uruguay; United States; Venezuela; Vietnam; Yugoslavia

    Model Variants

    M1A1 - Original Designation of 1942

    155mm Howitzer M1 - Original Formal Designation

    M114A1 - Base Series Designation from 1962 onwards