Some interesting photos, from the "Roger Freeman" collection.
A 389 th BG, B-24 fitted with a tail Bazooka, for rear defense.





I wonder if it was ever used operationally?

A very interesting, but obviously impractical idea!

Not necessarily impractical, if i was attacking from astern, & suddenly a 12 foot flame appeared, it would certainly catch my attention, & probably ruin my attack.
Although after a couple of months , the Rabbit is out of the hat, & through training & tactics, the surprise would of been eliminated.
My 2 cents
The chance of hitting anything would be nil.
Unless it had some sort of "FRAG" warhead.