Original sentence: Founded in the Brezovica forest near Sisak, Croatia.On the same day, Yugoslav Partisans formed the 1st Sisak Partisan Detachment
Edited sentence: Founded in the Brezovica forest near Sisak, Croatia, its creation marked the beginning of anti-Axis resistance in occupied Yugoslavia.On the same day, Yugoslav Partisans formed the 1st Sisak Partisan Detachment, the first armed resistance unit in Europe