Complex sentence: By early afternoon, the Polish 1st Armoured Division had outflanked the 12th SS Panzer Division, enabling several Polish formations to both reach the 4th Armoured Division's objectives and significantly expand the bridgehead northwest of Trun.
Split into simpler sentences: By early afternoon, the Polish 1st Armoured Division had outflanked the 12. SS "Panzerdivision", enabling several Polish formations to both reach the 4th Armoured Division's objectives and significantly expand the bridgehead northwest of Trun.