Bomber Command raid - night of 25/26 September 1943

Minor Operations
8 Mosquitoes to Cologne and DÜSSELDORF, 10 Stirlings minelaying in the Frisians, 11 O.T.U. sorties. No losses.

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Minor Operations
5 Mosquitoes to Aachen and 4 each to Cologne and Hamborn, 4 O.T.U. sorties. No losses.
The 5 Mosquitoes attacking Aachen were carrying out the first trials of Mark II Oboe but the equipment failed and bombs were released visually or on dead reckoning.