Another railway marshalling yard, this one at Mons in Nazi-held Belgium, was the target for the Group's attack on the morning of May 10. As directed by 99th Combat Bomb Wing's Field Order 48-306, the Group dispatched thirty-eight B-26's at 0907 hours on a course to North Foreland to Furnes to Waregem to Nivelles to an Initial Point at 50 degrees, 30 minutes North, 04 degrees, 20 minutes East of the target, which was reached at 1036 hours. Royal Air Force Spitfires picked up the formation at North Foreland and escorted the bombers to the target. Thirty-seven of the Group's planes dropped two hundred ninety 500-pound General Purpose bombs on the target, only one failing to attack due to bomb rack malfunction. Results of the attack as quoted from first phase interpretation of the strike photo's were as follows:

1st Six: Excellent results. The concentration fell beside the Aiming Point, all within the target area.

2nd Six: Good Results. The bombs fell about 150 yards left of the Aiming Point within the target area.

3rd Six: Good Results. The main concentration, falling approximately 300 yards to the left of the Aiming Point, hit within the target area. A minority of the bombs landed 1000 yards to the left of the Aiming Point, extending into a canal.

1st Six: Excellent results. The entire pattern fell within the target area, landing on the Aiming Point.

2nd Six: Good Results.

3rd Six: Excellent Results.