It consisted largely of Bosnian and Croatian refugees from eastern Bosnia, where large massacres were carried out by Chetniks and to a small degree by the Yugoslav Partisans.[1] It became known for its fierce fighting against the Chetniks and the Partisans and massacres against Serb civilians.[1] The legion's commanders were Colonel Jure Francetić and Major Rafael Boban and it consisted of between 1,000 and 1,500 men.[1]