 With the installation of Emperor Alexander I of Russia in 1813, supernumerary membership was extended to foreign monarchs, who are known as "Stranger Knights and Ladies of the Garter".Each such installation originally required the enactment of a statute; however, a 1954 statute authorises the regular admission of Stranger Knights or Ladies without further special enactments.The Sovereign may "degrade" members who have taken up arms against the Sovereign.