 When Greece entered World War II, he sought re-appointment into the armed forces but was refused by the Ioannis Metaxas dictatorship.Following the collapse of the front through the German invasion of Greece in April 1941 and the onset of a triple occupation by Germany, Italy and Bulgaria, Psarros first attempted to organise a resistance group in Amfissa with the help of Lt. Andreas Mitalas, but without success.Next he went to Macedonia.