 Legentilhomme was a recipient of the "Order of the Liberation" ("Compagnon de la Libération").Legentilhomme was born on March 26, 1884 in Valognes, Manche.He was a cadet at the École Spéciale Militaire de Saint-Cyr 1905 to 1907 (promotion ""la Dernière du vieux Bahut"")
Promoted to Sub-Lieutenant in 1907.