High Quality Content by WIKIPEDIA articles! The following table shows comparative officer ranks of the principal Allied and Central powers during World War I. For modern ranks refer to Comparative military ranks. See also: Comparative military ranks of World War IIMajor participants not shown:Serbia (entered war on side of the Allies) Belgium (entered war on the side of the Allies after the German invasion in 1914)Bulgaria (entered war on side of the Central Powers 1914)Portugal (entered war on side of the Allies 1916)Romania (entered war on side of the Allies 1916)