Heeresgruppe F
Italian troops in the area were exhausted after years of wearing anti-partisan operations, characterized by brutalities, reprisals and repression, and were isolated in a hostile territory, mixed with numerous German divisions (over 20 divisions of Army Group F of Field Marshal Von Weichs, and of Army Group E of General Löhr) and Croat collaborationist units whom, on 9 September, immediately severed all ties with Italy and joined Germany in the fight against the former ally. Without any land connection, and with confusing and vague orders, units quickly disintegrated and many soldiers were disarmed, captured and deported to Germany. However, Italian soldiers in this area fought with more determination than the units left in Italy, suffering heavy casualties and harsh reprisals by the German units.