Complex sentence: On 14 December, led by the 42nd Armoured Brigade, the Syrian Arab Army launched a major offensive against HTS on the tallest hilltop in the area, Tal al-Baidm successfully capturing the area, after HTS pulled back to the west.
Split into simpler sentences: On 14 December, led by the 42nd Armoured Brigade, the Syrian Arab Army launched a major offensive against HTS on the tallest hilltop in the area, Tal al-Baidm. They managed to successfully capture the area, after HTS pulled back to the west.