Batman's No Killing Rule in Comics

I was reading a thread about Batman and his past homicidal tendencies. Someone mentioned that we should compile all the instances of Batman vowing to not kill anyone or going against using guns. If you have any instances of him refusing to kill or anything related, put it in here. I'll start with a couple.



- Batman #4.


- Batman #4. Batman uses a gun, but the editor's note mentions the no killing rule.

Batman's No Killing Rule in Comics