 There, in July 1941, he co-founded the organization "Freedom" (, "Eleftheria") with communists members, which deployed guerilla forces in the area of Nigrita, Lachana, and Kalokastro of Central Macedonia, to fight the Bulgarians, who had followed the Germans into Greece, occupied much of northern Greece and had set their sights on permanent annexation.Unfortunately, Psarros was betrayed to the Axis Forces and was chased by them.He fled to Athens, where in April 1942 he founded EKKA along with other significant figures such as the politician Georgios Kartalis, Colonel Evripidis Bakirtzis and other army officers like Dimitrios Karachristos and Dimitrios Georgantas.