Complex sentence: This gate was also the site of a devastating attack from a Vehicle Born Improvised Explosive that left a 3 foot deep crater early one morning on January 18th, 2004, many civilians were killed as they entered the gate for their daily jobs inside the Green Zone.
Split into simpler sentences: This gate was also the site of a devastating attack from a vehicle-borne improvised explosive that left a 3 foot deep crater early one morning on January 18th, 2004. Many civilians were killed as they entered the gate for their daily jobs inside the Green Zone.