Notes: This US howitzer was first designed shortly before World War 2, as the M-2A1 howitzer. It was used by the US until 1985, when it was replaced by the M-102 (which was itself replaced by the British 105mm Light Gun). The M-101 is still used by a number of third world countries, and many countries, including those in NATO and the Middle East, have them in reserve stocks. It is a conventional short-barreled howitzer.

Notes: This is an older US howitzer, still in service in the US and with Brazil, Cambodia, El Salvador, Greece, Guatemala, Honduras, Israel, Jordan, South Korea, Laos, Malaysia, Saudi Arabia, Turkey, Uruguay, Vietnam, and Yemen. It is a conventional howitzer with split-trail construction, and is raised on a baseplate before firing.

Notes: This weapon was first produced by the US in World War 2 as the M-1. It is a short-barreled weapon with limited range. The M-114 was not in active US service by 2004, but was still in service with dozens of countries worldwide, including Austria, Bosnia, Canada, Cambodia, Denmark, El Salvador, Greece, Iran, Iraq, Israel, Italy, South Korea, Norway, Netherlands, Saudi Arabia, Spain, Taiwan, Turkey, and several other South American and Asian nations. It is of conventional, if primitive, construction.

Notes: This weapon was originally produced by the US in World War 2 for heavy bombardment. Due to its weight and short range, it was taken out of service in the US in the late 1970s, but remains in service worldwide with many countries. However in most countries, the M-115 was replaced by the M-110 self-propelled howitzer or by 155mm howitzers that have longer range.