Complex sentence: Tasked to bomb German troop convoys as they advanced south-west of Luxemburg four aircraft from the squadron took off at 17:00 hours GMT from Rheims Champagne, located a column of 30 to 40 vehicles and made dive bombing attacks in the face of heavy defensive fire.
Split into simpler sentences: Tasked to bomb German troop convoys as they advanced south-west of Luxemburg, four aircraft from the squadron took off at 17:00 hours GMT from Rheims, Champagne. After locating a column of 30 to 40 vehicles they made several dive bombing attacks in the face of heavy defensive fire.