His marriage to American Captain Marie Helen Glennon and administrative difficulties regarding his residency in the US was dramatised in the film I Was a Male War Bride, with Cary Grant as Charlier.

[7] He became deputy-director to the United Nations Relief and Rehabilitation Administration (UNRRA), managing a refugee camp in Ansbach, near Nuremberg.

However, the famous scene where Charlier, played by Cary Grant, impersonates a female army nurse, was not historically correct.

In 1958, he was doing research in energy of the oceans (waves, tides, salt concentrations) on the ship of Jacques-Yves Cousteau, the RV Calypso, under the lead of Jacques Bourcart.

[11] Charlier was early in drawing attention to global warming, promoting sustainable energy production and equitable use of marine resources.