The airfield at Montdidier came under heavy fighter bomber attack on 11 June followed by another attack on 12 June resulting in significant damage to the airfield. On 12 June Weissenberger filed a claim for three aerial victories. Together with his wingman, Unteroffizier (Sergeant) Alfred Tichy, he took off at 06:00 and during the course of 12 minutes shot down three P-47s.
The airfield at Montdidier suffered heavy fighter bomber assaults on 11 June followed by another attack on 12 June, causing substantial damage. On 12 June Weissenberger filed a claim for three aerial victories. Together with his wingman, Unteroffizier (Sergeant) Alfred Tichy, they took off at 06:00 and within 12 minutes shot down three P-47s.