The eighteenth sultan of the Ottoman Empire was Ibrahim I.
Eighteenth Army - Japan - was created in 1942.
Eighteenth Army - Japan - ended in 1945.
Eighteenth-Century Studies was created in 1966.
Orchestra of the Eighteenth Century was created in 1981.
No, "eighteenth" is an ordinal number used to describe the position of something in a sequence (e.g., the eighteenth century). It is not a common noun that refers to a general person, place, or thing.
Japanese Eighteenth Area Army was created in 1943.
The Eighteenth Brumaire of Louis Napoleon was created in 1869.
Japanese Eighteenth Area Army ended in 1945.
Eighteenth Amendment of the Constitution of Ireland happened in 1998.
Music from Eighteenth-Century Prague was created in 2009.
The eighteenth amendment officially started the Prohibition Era, declaring alcohol illegal.