Just out of curiosity, how does it work? Interesting, my country has a kind of strange "necessary defence" law - it covers defending something that is protecte

Just out of curiosity, how does it work? Interesting, my country has a kind of strange "necessary defence" law - it covers defending something that is protected by lay, not necessarily your own thing - as long as the defence is appropriate. So you can "defend" someone else, or stop a thief even if they are not threatening you, because you are upholding the law - but you don't get to shoot a thief for example, because that would not be appropriate. Is this how it works in Germany? I'm kind of curious if we just stolen this from our neighbour. EDIT: Tomte replied on the side.