Armed force where the soldier has to kill their dog?

I'm not sure where I heard this, but supposedly their is some sort of armed force from a country where they are to raise a dog from a puppy and then when the dog grows they make them kill it? Not sure if it's some made up stuff, but I just can't find the answer anywhere, I'm just curious because... show more I'm not sure where I heard this, but supposedly their is some sort of armed force from a country where they are to raise a dog from a puppy and then when the dog grows they make them kill it?

Not sure if it's some made up stuff, but I just can't find the answer anywhere, I'm just curious because that sounds like some brutal training if they make them do that.
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