In June 1942, the "Wehrmacht", Home Guard and Ustaše Militia launched the Kozara Offensive, aimed at dislodging Partisan formations around Mount Kozara, in northwestern Bosnia, which threatened Germany's access to the Belgrade–Zagreb railway line. Although the Partisans did suffer a humiliating defeat, the area's civilian population bore the brunt of the offensive. Between 10 June and 30 July 1942, 60,000 civilians living in the vicinity of Mount Kozara, mostly Serbs, were rounded up and taken to concentration camps. "Kozara was cleared to the last man," "Wehrmacht" Plenipotentiary General Edmund Glaise-Horstenau wrote, "and likewise, the last woman and last child."