The following night, the first raid undertaken by Giants unaccompanied by Gothas took place. Four aircraft from Rfa 501 took off, one turning back before reaching England and casualties and damage were light. Eighty defensive sorties were flown and one Giant was attacked by five aircraft, one attack succeeding in disabling an engine. British fighter pilots' efforts against the Giants were handicapped by poor intelligence work, although the existence of these aircraft was known, the information had not been passed on, and many pilots may have underestimated the range from which they were firing.