Complex sentence: Partisans attacked within days, and on 15 September, the 3rd Shock Division finally captured Berane, defeating strong Chetnik forces along with 70 Germans, and killing 143 Chetniks and 8 Germans.
Split into simpler sentences: Partisans attacked within days; on 15 September, the 3rd Shock Division finally captured Berane. They defeated strong Chetnik forces and 70 Germans, and killed 143 Chetniks and 8 Germans.