Complex sentence: They were then joined by two Centaur Support Tanks from the 1st Royal Marine Support Regiment, the first of these tanks moved toward the wall firing its 95mm howitzer and obliterating a machine-gun bunker that had been covering the crossroads.
Split into simpler sentences: They were then joined by two Centaur Support Tanks from the 1st Royal Marine Support Regiment. The first of these tanks moved toward the wall firing its 95mm howitzer and obliterated a machine-gun bunker that had been covering the crossroads.