M110 howitzer

The 8-inch (203 mm) M110 self-propelled howitzer is an American self-propelled artillery system consisting of an

According to the operator's manual, the M110's typical rate of fire was three rounds per two minutes when operated at maximum speed, and one round per two minutes with sustained fire. The M110 featured a hydraulically operated rammer to automatically chamber the 200 lb (91 kg)+ projectile. These rammers were prone to breakdown and generally slowed operation of the gun because the rammers required crews to completely lower the massive barrel before using it. Well trained and motivated crews could achieve two to four rounds per minute for short periods by using the manual rammer, essentially a heavy steel pole with a hard rubber pad on one end. Using the manual rammer was physically demanding, but crews were not required to lower the barrels as much as with the hydraulic rammer.

The M110's range varied from 10.4 mi (16.8 km) to approximately 16 mi (25 km) when firing standard projectiles, and up to 19 mi (30 km) when firing rocket-assisted projectiles.^[3]

The M110 howitzer first entered service with the U.S. Army in 1963 and was used in the

At the end of the Cold War under U.S. Division Plan 86, all armored and

Iran used its M110s during its offensives against Iraq in the Iran–Iraq War.^{[citation needed]}

The

• M14 dummy
• M106 HE
• M650 HE rocket assist projectile (RAP)
• M509 ICM
• M404 ICM anti-personnel (airburst)
• M426 agent GB Sarin
• M422A1 Artillery Fired Atomic Projectile^[7]
• M424 High Altitude Spotting Round for the M422 projectile
• XM753 Atomic RA (rocket assisted)^[8]

•  Bahrain: Royal Bahraini Army 13 as M110A2 from Netherlands delivered in 1994,^[9] 25 as M110A2 from US delivered in 1996.^[10]
•  Cyprus: Cypriot National Guard 8 as M110A2^[11]
•  Greece: Hellenic Army 145 as M110A2.
•  Egypt: Egyptian Army Received 144 as M110A2 as aid in 1996.^[12]
•  
  Iran Army
  30 M110.
•  Jordan: Jordanian Armed Forces 120 as M110A2.
•  
  Moroccan Army
  60 as M110A2.
•  Pakistan: Pakistan Army 140 in service as of 2021.
•  Taiwan: Republic of China Army 70 M110A2 as of 2023^{[13]: 291 [14]: 1021}
•  
  T-155 Fırtına

•  
  Belgian Army 11 M110A2 between 1972 and 1993 used by the 20th Artillery Regiment (Belgian Forces in Germany
  ).
•  Germany: German Army M110A2 until 1993.
•  Israel: Israeli Army 36 as M110, retired in 1990s.
•  Italy: Italian Army used M110A2s, phased out by 1998.
•  Japan: Japan Ground Self-Defense Force 91 as M110A2. As of 2023, approximately 10 M110A2s were in active, owned by 104th Artillery Battalion of 4th Artillery Group (Mechanized) in Hokkaido.^[15] They retired in March 2024 and the battalion was disbanded.^[16]
•  South Korea: Republic of Korea Army Operated M110 since 1961. Retired in the late 2000s after being replaced by K9 Thunder.^[17]
•  South Vietnam: Army of the Republic of Vietnam.
•  Netherlands: Royal Netherlands Army M110A1 and M110A2, replaced by the M109 in the 1990s
•  Spain: Spanish Army as 64 M110A2, deployed in divisional fire support regiments until 2009.
•  
  FV433 Abbot SPG, the M109A2, and the M110A1 were replaced by the AS-90 in the early-mid-1990s.) Used in Operation Granby/Gulf War.^[6]
•  United States: Used by United States Army and United States Marine Corps, M110A2s retired in 1994.

• List of U.S. military vehicles by model number
• 2S7 Pion – Soviet L/55.3 203 mm self-propelled cannon
• 2S4 Tyulpan – Soviet 240 mm self-propelled mortar
• List of crew-served weapons of the US Armed Forces
• M55 – 203 mm self-propelled gun, predecessor to the M110
• M107 – a 175 mm self-propelled gun on the same chassis
• Sholef – Israeli 155 mm self-propelled howitzer
• T92 Howitzer Motor Carriage – a 240 mm howitzer M1 fitted on a M26 Pershing chassis

• TM 9-2350-304-10 dated October 1979

External links

Wikimedia Commons has media related to M110 203 mm self-propelled howitzer.

• fas.org.
• M110 Walk Arounds on Prime Portal
• https://www.militaryfactory.com/armor/detail.asp?armor_id=59