BOULOGNE GUN POSITIONS
257 aircraft - 119 Wellingtons, 112 Stirlings, 16 Mosquitoes, 10 Halifaxes. O.T.U. aircraft formed part of this force and 5 B-17s also flew the first American night-bombing sorties of the war with Bomber Command. Nos. 4 and 5 Groups did not take part in the raid. No aircraft lost.
The target was the site of a German long-range gun battery and the marking was mainly provided by Oboe Mosquitoes, some of whom were experimenting with a new technique. But the raid was not successful; the marking and the bombing were not accurate and the battery does not appear to have been damaged.
