The provided episode details the Feldzug nach Rowno (Campaign of Rivne), a major military operation on the Eastern Front of World War I during the autumn of 1915. The campaign involved the advance of Austro-Hungarian and German forces into Russian territory following the Russian Great Retreat, aiming to capture the city of Rivne (Rowno). The episode outlines the preconditions, troop deployments of the Central Powers (k.u.k. 1st, 2nd, and 4th Armies) and the Russian Southwest Front, and the phases of the offensive. It explains the initial successes, including the capture of Lutsk (Luck), followed by a devastating Russian counteroffensive in mid-September that forced a temporary Central Powers withdrawal, and concludes with a successful second offensive phase supported by German troops that stabilized the front. Ultimately, the campaign resulted in territorial gains for the Central Powers but at the cost of over 230,000 casualties for the Austro-Hungarian forces alone.