Editing Louis de Broglie (section)

=== Family and education ===
[[File:Portrait of François Marie de Broglie, Duke of Broglie, Marshal of France (member of the circle of Hyacinthe Rigaud).jpg|thumb|[[François-Marie, 1st duc de Broglie]] (1671–1745) ancestor of Louis de Broglie and [[Marshal of France]] under [[Louis XV of France]]]]

Louis de Broglie belonged to the famous aristocratic family of [[House of Broglie|Broglie]], whose representatives for several centuries occupied important military and political posts in France. His father, [[Victor, 5th duc de Broglie|Louis-Alphonse-Victor, 5th duc de Broglie]], was married to Pauline d'Armaille, the granddaughter of the Napoleonic General [[Philippe Paul, comte de Ségur]] and his wife, the biographer, [[Marie Célestine Amélie d'Armaillé]]. They had five children; in addition to Louis, these were: Albertina (1872–1946), subsequently the Marquise de Luppé; [[Maurice de Broglie|Maurice]] (1875–1960), subsequently a famous experimental physicist; Philip (1881–1890), who died two years before the birth of Louis, and Pauline, Comtesse de Pange (1888–1972), subsequently a famous writer.<ref name="Nye">{{cite journal |author = M. J. Nye. |title= Aristocratic Culture and the Pursuit of Science: The De Broglies in Modern France |journal= Isis|edition= Isis  |year= 1997 |volume= 88 |issue=  3|pages = 397–421 |doi =  10.1086/383768|jstor= 236150|s2cid= 143439041}}</ref> Per the ''[[New York Times]]'', "a great-grandfather fought on [[George Washington]]'s side in the [[American Revolutionary War]] as the chief lieutenant of the [[Marquis de Lafayette]]."<ref name=NYTObit/>

Louis was born in [[Dieppe, France|Dieppe]], Seine-Maritime. As the youngest child in the family, Louis grew up in relative loneliness, read a lot, and was fond of history, especially political. From early childhood, he had a good memory and could accurately read an excerpt from a theatrical production or give a complete list of ministers of the [[Third Republic of France]]. For this, he was predicted to become a great statesman in the future.<ref name="Abragam">{{cite journal |author = [[Anatole Abragam|A. Abragam]]. |title= Louis Victor Pierre Raymond de Broglie | journal= Biographical Memoirs of Fellows of the Royal Society |year= 1988 |volume= 34 |pages = 22–41 |doi =  10.1098/rsbm.1988.0002|doi-access=  }}</ref>

De Broglie had intended a career in [[humanities]], and received his first degree (''[[Licentiate (degree)#France|licence ès lettres]]'') in history. Afterwards he turned his attention toward mathematics and physics and received a degree (''[[Licentiate (degree)#France|licence ès sciences]]'') in physics. With the outbreak of the [[First World War]] in 1914, he offered his services to the army in the development of radio communications.