He was best known for his portraits of leading German entrepreneurs such as Max Grundig, Herbert Quandt, and politicians such as Adolf Hitler, Hermann Göring and Paul von Hindenburg.

[1] In 1908, Hommel studied in the studio of the French academic painter Jean-Paul Laurens in Paris.

In the 1937 exhibition, he showed several works, including portraits of Field Marshall August von Mackensen and Reich Minister Hjalmar Schacht.

He continued to be in favour of the leading names of the Nazi Germany, being commissioned two portraits of Adolf Hitler, in 1939 and 1940, including the famous The Führer at the Battlefield, which was massively reproduced.

[4][5][6] After the war, he was accused of being a Nazi activist and beneficiary at a Denazification court, in Munich, on 9 July 1948, but the complaint was withdrawn after a month.