In 1903, he joined the
French Navy and served on battleship
Diderot in
World War I. He subsequently served on
Paris II and was taken prisoner by
Mustafa Ertuğrul Aker on 13 December 1917, after the sinking of the ship. In 1939, he published ''L'Apocalypse de notre temps
and explored the world of intrigue that helped fabricate the forgery Protocols of the Elders of Zion'', and how it became the source of Hitler's antisemitism. All but one copies of the book were destroyed by the Nazis, it remained unknown until its reedition in 1991. ==References==