Complex sentence: The 2nd Brigade moving along the Ain es Sir-Amman road were slowed down by several machine-gun posts, which they over-ran and captured 130 prisoners, three artillery pieces, and four machine-guns.
Split into simpler sentences: The 2nd Brigade moving along the Ain es Sir-Amman road, were slowed down by several machine-gun posts. Over running them they captured 130 prisoners, three artillery pieces, and four machine-guns.