You are correct!
From our dictionary:
nom de guerre
(nom" du gâr'; Fr. nôn du ger'),
—pl. noms de guerre (nomz" du gâr'; Fr. nôn du ger')
an assumed name, as one under which a person fights, paints, writes, etc.; pseudonym.
(nom" du gâr'; Fr. nôn du ger'),
—pl. noms de guerre (nomz" du gâr'; Fr. nôn du ger')
an assumed name, as one under which a person fights, paints, writes, etc.; pseudonym.
