109th Armor Regiment - Dui Wo Txt X 300 T Shirt109th Armor Regiment Dui Wo Txt X 300 T Shirt, Various, Classic, Black The 109th Armor Regiment is a unit of the U. S. Army National Guard specializing in armored warfare. It operates tanks and armored vehicles to provide combat support in various missions. The regiment has a storied history of serving in conflicts and training exercises, maintaining readiness to adapt to modern armored combat requirements.