See studies by R. Cohen (1968, repr. 1970), G. Lemaitre (1971), and Paul Mankin (1971).
He was married in 1918, and in the subsequent period between the two World Wars Giraudoux produced the majority of his writing. He first achieved literary success through several of his novels, notably Siegfried et le Limousin (1922) and Eglantine (1927), but it is his plays that gained him international renown. A meeting with Louis Jouvet, in 1928, stimulated his writing.
Before World War II he published in 1939 a highly antisemitic political essay called "Pleins pouvoirs" (Full power).
He is buried in the Cimetière de Passy in Paris.
French Wikipedia has a page on Jean Giraudoux.