Pedzisa mutsara unotevera: Willius akaberekwa musi wa5 November 1919 muMainz-Kostheim. Pashure pokudzidziswa kuva mutyairi wendege, "Obergefreiter" Willius akatumirwa ku2. "Staffel" (2nd squadron) ye "Jagdgeschwader" 20 (JG 20<unk>20th Fighter Wing). Panguva iyoyo, squadron iyi yakatanga kurairwa na "Oberleutnant" Albrecht Freiherr von Minnigerode uyezve na "Oberleutnant" Fritz Stendel. "Staffel" yakanga iri pasi paI. "Gruppe" (boka rokutanga) reJG 20 raitungamirirwa na"Hauptmann" Hannes Trautloft. The "Gruppe" akanga akashongedzerwa ne Messerschmitt Bf 109 E uye vakarwa muHondo France pasi pesimba "Jagdgeschwader" 51 (JG 51<unk>51st Fighter Wing). Kutevera
Armistice yaJune 22, 1940, I. "Gruppe" yeJG 20 yakabatanidzwa zviri pamutemo muJG 51, ichiva III yayo. "Gruppe" musi wa4 July. Somugumisiro, Willius akava mutezo weVasere. "Mupumburu".