[MW Giles]

I think that I have worked it out and both of your reports are roughly correct, the main problem is 446 and 448 BGs and where they were initially assigned their primary targets

The CBW involved
2 CBW = 389, 445 and 453 BGs
20 CBW = 93, 446 and 448 BGs
95 CBW = 489 and 491 BGs

Each target assigned to be attacked by nominally 3 Sqns of 12, plus 3 PFF.

Montfort sur Meu = 2 CBW = 1 sqn 389 BG and 2 sqns 453 BG
36+3 assigned and 35+3 bombed

Rennes (Ile & Villaine) = 2 and 20 CBWs = 1 sqn 93 BG and 2 sqns 445 BG
34+3 assigned, 17+3 bombed primary and 11 bombed alternatives

Porcaro = 20 CBW = 1 sqn 446 BG and 2 sqn 448 BG
39+3 assigned, 0 attacked primary, 33+3 attacked alternatives
Either 1 sqn of 448th attacked primary, and 1 sqn to Ploermel or both to Ploermel
The 446th BG attacked a T/O on Rennes airfield

Your reference and "The 448th BG (H) Liberators over Germany in WW2" suggests one sqn attacked Porcaro, but the 8th AF report says no

Ploermel = 20 and 95 CBW = 1 sqn 446 BG, 1 sqn 489 BG and 1 sqn 491 sqn
41+3 assigned and 37+3 bombed, 1 attacked alternative

Your reference and "The History of the 446th BG (H) 1943-5" confirms attacks on Rennes and Ploermel

This adds up, in my head anyway

Regards

Martin