These are still (very rarely) found by hikers in the pacific northwest (source: i'm a bomb tech).
Other relevant / weird WWII reading: https://en.wikipedia.org/wiki/Bat_bomb (US program) https://en.wikipedia.org/wiki/Anti-tank_dog (Russian program)
Other relevant / weird WWII reading: https://en.wikipedia.org/wiki/Bat_bomb (US program) https://en.wikipedia.org/wiki/Anti-tank_dog (Russian program)