The widely used M109 carries a 155-mm howitzer and is the principal self-propelled artillery support for U.S. Army divisions. It is a large tracked vehicle with a fully traversable turret and ...

As a result, the name M109 could refer to both an older M109A2 howitzer retrieved from storage and the modern M109A6 Paladin system, which, together with its updated version, the M109A7, forms the ...