There is no known author named "Franz Baumer". It is possible that you are thinking of
Erich Maria Remarque, the German author who wrote the famous anti-war novel
"All Quiet on the Western Front". The protagonist in the novel is
Paul Bäumer, and he is sometimes referred to as "Franz Bäumer" in some sources.
However, there is no actual author named "Franz Baumer". It's important to clarify the name to find the correct author and their works.