Hi mate, hope that this helps:
16/17 September 1943
340 aircraft of 3, 4, 6 and No 8 Groups - 170 Halifaxes, 127 Stirlings, 43 Lancasters - to attack the important railway yards at Modane on the main railway route from France to Italy. 5 American B-17s also took part. The marking of the target, situated in a steep valley, was not successful and the bombing was not accurate. No report is available from France. 2 Halifaxes and 1 Stirling lost.
12 Lancasters - 8 from 617 Squadron and 4 from 619 Squadron - attempted to bomb the railway viaduct at Anthéor Cannes on the coastal railway line leading to Italy, but no direct hits were scored. 1 Lancaster of 619 Squadron was lost; it came down in the sea off Portugal, possibly while trying to reach Gibraltar.
5 Mosquitos to Berlin, 3 OTU sorties. No losses.
10/11 November 1943
313 Lancasters of 5 and No 8 Groups to attack the railway yards at Modane on the main line between France and Italy. The Pathfinder marking, in difficult conditions, was slightly beyond the target but 200 aircraft brought back photographs to show that their bombs fell within 1 mile of the target and the railway system was seriously damaged.
2 Mosquitos to Dortmund, 7 Stirlings minelaying in the River Gironde and off La Pallice, 20 OTU flights. No aircraft were lost from the 342 sorties flown on this night.
http://www.raf.mod.uk/bombercommand/nov43.html
First night raid by the B-17s (several references to 5, perhaps the same 5 each time?) was 8/9/Sept 43, attack on the Boulogne gun positions.
Cheers
Andy