 Some 24 airmen were killed and nine were captured.As darkness fell at the close of "Adlertag", Sperrle sent nine "Kampfgruppe" 100 (Bombing Group 100) He 111s to conduct a strategic bombing raid against the Supermarine Spitfire factory at Castle Bromwich, Birmingham.Despite the group being a specialist night strike unit which had high expertise in night navigation, only four of the crews found their targets.