Jean Marchand (February 19, 1845-March 15, 1914), the first leader of the Union of European Republics. IOTL this is a picture of the French philosopher Georges Sorel.
Francois Juarez (May 12, 1866-June 15, 1914), the second leader of the Union of European Republics. His father was a Spaniard from Aragon and his mother was a Frenchwoman from Brittany. He was born in Zaragoza, Spain and his family moved to Paris, France when he was eight years old in 1874. He was executed in 1914 on the orders of his political rival Mathias Holtz. IOTL this is a picture of the German Communist Karl Liebknecht.
Mathias Holtz (November 1, 1859-June 7, 1925), the Bavarian-born and third leader of the Union of European Republics and one of the most infamous and brutal despots of the twentieth century. IOTL this is a picture of French anarchist Sebastian Faure.
Josef Meminger (January 30, 1873-November 24, 1915), a General in the European People’s Army who became infamous for his attempted and failed plot against Mathias Holtz. IOTL this is a picture of German flying ace and Freikorps leader Rudolf Berthold.
Lucien Duret (May 9, 1869-January 3, 1936), the fourth leader of the Union of European Republics. On January 3, 1926, during the Strassburg Coup, Lucien Duret committed suicide with a gunshot to his temple in his private office. IOTL this is a picture of French trade unionist Léon Jouhaux.
Albrecht Meyer (June 17, 1880-January 7, 1960), the Baden-born leader of the 1926 coup against Lucien Duret. IOTL this is a picture of Hermann Ehrhardt, a German Freikorps commander.
Walther Hasselbach (May 20, 1887-September 1, 1969), the fifth leader of the Union of European Republics. IOTL this is a picture of Ernst Thälmann, a leader of the Communist Party of Germany.