Dee ihe ga-eso paragraf a - A mụrụ Willius na 5 Nọvemba 1919 na Mainz-Kostheim. Mgbe ọ mụsịrị ọzụzụ ịnya ụgbọelu, "Obergefreiter" Willius nọ na 2. "Staffel" (2nd squadron) nke "Jagdgeschwader" 20 (JG 20<unk>20th Fighter Wing). N'oge ahụ, ndị isi ndị agha a bụ "Oberleutnant" Albrecht Freiherr von Minnigerode na "Oberleutnant" Fritz Stendel. "Staffel" nọ n'okpuru m. "Gruppe" (1st group) nke JG 20 nke "Hauptmann" Hannes Trautloft duziri. The "Gruppe" e onwem na Messerschmitt Bf 109 E na-alụ ọgụ na Agha nke France n'okpuru akara nke "Jagdgeschwader" 51 (JG 51 <unk> 51st Fighter nku). Mgbe nkwekorita nke 22 June 1940 gasịrị
M, m. E jikọtara "Gruppe" nke JG 20 na JG 51, na-aghọ III ya. "Gruppe" na July 4. N'ihi ya, Willius ghọrọ otu n'ime mmadụ asatọ ahụ. "Staffel". (Ọkpụkpụ na-adọkpụ)