Rubuta ci gaba ga wannan sakin layi - A watan Oktoba 1941, ba tare da sanin shugabanninsa ba, Sommer ya taimaka wajen shirya harin da aka kai a kan majami'u bakwai a birnin Paris, wanda aka yi wahayi zuwa gare shi a shekarar 1938
, tare da haɗin gwiwar Eugène Deloncle. An dakatar da biyan kuɗi na makonni huɗu sakamakon "SS-unwürdigen Verhaltens" (Halin da bai dace da SS ba) " kuma ba zai sami ci gaba ba a cikin shekaru uku masu zuwa. Daga baya aka tura shi zuwa Marseille da Nice. An kuma yi zargin cewa ya kasance ɗan leƙen asiri ga Krupp.