 Poulos also worked for the National Union of Greece (EEE), an antisemitic party sponsored by the SS.He and his forces organised and committed many crimes in the rural areas of Greece; the most notorious was the attack on Giannitsa in September 1944, during which about a hundred peasants were executed.The aim of the executions was to instill terror into the supporters of the left-wing EAM/ELAS, as Giannitsa was considered an important resistance centre.