The M109 Howitzer is a self-propelled artillery piece used by the United States and many other countries. It is designed to provide indirect fire support to ground troops, capable of firing a variety of shells, including high-explosive and smoke rounds. The M109 has a range of approximately 24 kilometers (15 miles) with standard ammunition and can be equipped with advanced targeting systems. First introduced in the 1960s, the M109 has undergone several upgrades, resulting in various models, such as the M109A6 Paladin. This modern version features improved fire control systems, enhanced mobility, and better armor protection, making it a vital asset on the battlefield. The M109 remains in service today, reflecting its adaptability and effectiveness in modern warfare.