Topic - Yuma Proving Ground

Yuma Proving Ground (YPG) is a United States Army proving ground and one of the largest military installations in the world. It is a subordinate command of the Army Test and Evaluation Command. - Source: Wikipedia

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ARMY and MARINES - M-109A6 Paladin is an American 155mm self-propelled howitzer, first introduced in the early 1960s. It has been upgraded a number of times, most recently to the M109A7. The M109 family is the most common Western indirect-fire support weapon of maneuver brigades of armored and mechanized infantry divisions. The M109 has a crew of six: the section chief, the driver, the gunner, the assistant gunner and two ammunition handlers. The gunner aims the cannon left or right (deflection), the assistant gunner aims the cannon up and down (quadrant). The M109A6 Paladin needs only a crew of four: the commander, driver, gunner and an ammunition loader. The British Army replaced its M109s with the AS-90. Several European armed forces have or are currently replacing older M109s with the German PzH 2000. Upgrades to the M109 were introduced by the U.S. (see variants below) and by Switzerland (KAWEST). With the cancellation of the U.S. Crusader and Non-Line-of-Sight Cannon, the Paladin will remain the principal self-propelled howitzer for the U.S. for the foreseeable future. (U.S. Army photo by Spc. Ryan Stroud, 3rd Brigade Combat Team, 1st Cavalry Division Public Affairs)

Army on improved Howitzer’s insane range: ‘We’re making artillery great again’

By Douglas Ernst - The Washington Times