John,
Regarding my avatar pix, I have no idea what really happened, but the aircraft involved [RAF BE-2] would suggest a training foul up of some sort. As this aircraft has ailerons, it's a BE-2C , OR dual control a BE-2D, both of which were used extensively as trainers. I believe that most theatre operational BEs had an upper wing cut out and the front landing skids removed, which this one does not. The Roundel placement on the rear stabilizer, as opposed to the upper wing surface, would be very unusual for an aircraft used in combat. The BEs were all notoriously very slow, and would be lucky to get over 70 mph with a tail wind. So, I would theorize that we have a noob pilot on training exercise, gently stalling the slow BE nose down into the tree's relatively soft upper branches. This is pure conjecture on my part, but given the clues in the photo, that's the way I figure it. I chose it as an avatar due to my interest in WWI aircraft, and LOL, I can relate to the poor fellows plight, as I'm usually "up a tree" at least half the time!
Getting back to the Tondern raid, I did some nosing around at the naval-history site provided by Fibber. There are some period Ship's logs on there, one of which is from the HMS Galatea, which participated in the raid. It's all heavily copywrited so I can't copy and post it here. There are operational log entries as to some of the maneuver that the Galatea did before, during, and after the raid. You may want to check it out.
Regards, AER_DaddyO
"Don't just stand there... get one up!"