Complex sentence: It also participated in the drive to Amiens; the fastest and deepest penetration into enemy territory ever made, until the Gulf War (1991), and on September 4, the 11th Armoured Division captured the city of Antwerp.
Split into simpler sentences: It also participated in the drive to Amiens, the fastest and deepest penetration into enemy territory ever made at that time. On September 4, the 11th Armoured captured the city of Antwerp.