To increase the level of surprise still further, the rumble of the approaching tanks was to be masked by bombers flying up and down the German lines. The bombers were twin engine Handley Page O-400's whose engines were similar to the tanks. However the 2 RAF squadrons detailed to take part decided it was too hazardous to order planes into the air in the unseasonably dense fog, and asked for volunteers. Two volunteered from 207 Squadron, Captains Gordon Flavelle and William Peace, and both were awarded the Distinguished Flying Cross.
