110th Armor Regiment - Ar Branch Wo Txt X 300 T Shirt110th Armor Regiment Ar Branch Wo Txt X 300 T Shirt, Various, Classic, Black The 110th Armor Regiment is a unit of the U. S. Army, part of the Army National Guard. It specializes in armored warfare, operating tanks and other armored vehicles. The regiment has a history of providing critical support in various conflicts and training exercises, adapting to the evolving demands of modern armored combat.