The 150th Cavalry Regiment ("The Second West Virginia") is a regiment of the West Virginia Army National Guard, with troops in multiple locations throughout West Virginia and one troop (part of the North Carolina Army National Guard) in Sanford, North Carolina. It was originally formed as Greenbrier County militia, fighting for Virginia in the American Revolutionary War. During the American Civil War, companies of the regiment loyal to the recognized Union state government in Wheeling were later combined to form the Union Army's 5th and 9th West Virginia Infantry regiments, aiding in the defeat of Confederate troops in West Virginia, Ohio and Virginia.