He served in the World War I but after the war there was less need for soldiers and thus he retired. He then married Catherine "Kitty" Wolf on the 28 April 1925, after they lived together in Paris. Catherine (who was also American) was a friend of Wallis Simpson and after Edward VIII abdicated he traveled to Catherine and Eugéne's house in Enzesfeld. Shortly after the beginning of World War II Catherine and Eugéne left for Long Island were Catherine later died in 1946. Eugéne then remarried Jeanne Stuart on the 21 of December in 1952. They both lived in New York City and Long Island but eventually left to live in Monte Carlo and both died therein 1976.