Summary/Abstract: Тhe First Šumadian Partisan Detachment was one of the first antifascist units established in Yugoslavia after the beginning of the occupation. A few days after its establishment, on July 1, 1941, in the village of Gornja Trešnjevica, the Detachment entered into actions that were multiplying over time. During 1941 it operated primarily in the territory of the central Šumadija around Aranđelovac, Topola, Lazarevac and Rudnik, undertaking smaller actions in the region of Čačak and Gornji Milanovac. Imortant battles were fought against Germans near Bistrica, Čumić, Krćevac and during the siege of Lazarevac, then, against units of Milan Nedić government in Belanovica and Rudnik and chetniks of Draža Mihailović in Čačak region. During the action of breaking down the uprising, Тhe First Šumadian Partisan Detachment was engaged in an unsuccessful defense of Rudnik and Gornji Milanovac. After the breakdown of the uprising, the Detachment withdrew with the majority of the partisan forces towards the southwest of Serbia. Later, combatants became part of the First and Second Proletarian Brigades. Meanwhile, a small part of the combatants stayed in the Šumadija area, but soon most of them were arrested: some were killed, some interned, and some, after release, became inactive. In the spring of 1942, about ten combatants decided to reestablish the Detachment and enter in smaller actions in Aranđelovac area.
