Swedes, like other UN troops, had difficulty knowing who really were friends and who were enemies, and the fighting they engaged in did not always have an apparent rational reason. In August, the Swedes moved to Elizabethville in Katanga, where they ended up in their first combat situation and suffered their first loss in connection with the escort of a rail road transport. The trains, which were carrying Katangan Baluba prisoners, were attacked by Baluba, a nationalist group who supported the central government against the break out government. In practice, at that point, the Swedes fought on the same side as the Belgian-led Katangan gendarmerie, who would later become the UN's worst enemy.