Tiger Moth biplanes were sent to scour the seas for surfaced U Boats.
The procedure to be adopted if they found one might have come from Blackadder.
However, they were 20lb bombs which would, at the very peak of optimism (and accuracy), force the enemy to carry out some light redecorating.
Not by radio, because Moths didn’t have one.
The almost unbelievable answer is: by pigeon.
These birds sat in a basket in front of the cockpit, no doubt pondering the infinite strangeness of life and trying to work out why the humans put them on an aeroplane when they could already fly.
One contemporary RAF patrol report noted that the aircraft returned to base because the ‘contents of the bottom of the pigeon’s basket were blown back into the cockpit.’
War is indeed hell.