"There was one group, however, called ELAS"
by cm
Aris Velouchiotis
Creative Commons AttributionAris Velouchiotis - Credit: PIAZZA del POPOLO, Flickr

Ellinikos Laïkos Apeleftherotikos Stratos (ELAS: the National Popular Liberation Army) began operations against Italian and German forces on 7 th June, 1942.   Led by Athanasios Klaras, who called himself Aris Velouchiotis, ELAS was a communist organisation which quickly grew in strength and popularity, achieving a force of over 60,000 partisans.