Munich Secession
In 1908, he studied in the studio of the French academic painter Jean-Paul Laurens in Paris. He returned to Germany the following year, joining the Munich Academy on 19 October 1909, where he studied painting with Hugo von Habermann, a leading name of the Munich Secession. Hommel became a member and later president of the Munich Secession. He became a teacher in 1928. He gained recognition during the Weimar Republic as a portrait painter, doing the portraits of Friedrich Ebert and Albert Einstein.