Arthur E. Adams - rear gunner shot down on a gardening operation in 1942

I came across Arthur Adams' account of being shot down by a flak ship in the Bay of Biscay - it's definitely worth a read. Thought to be "a piece of cake...", gardening ops were incredibly dangerous as the bomber had to fly low and maintain an accurate and steady course for the navigator and bomb aimer to 'sow' their mines accurately.

The Gironde Estuary had anti-aircraft batteries and flak ships on it and I've wondered if these caused the disappearance of ED559.