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Bleg: Quote about Military Heroism from Kurt Tucholsky

I've got a bleg. A few years ago I was in a Japanese restaurant here in Düsseldorf, and on the wall was a quotation (in German) that went something like: 'Every speech in praise of the heroism of a fallen soldier in the last war guarantees the death of three more in the next war.'  My recall of the wording is really vague, which is why I can't find this on my own. I think it was from Tucholsky, seems like something he would say, but Im not 100% sure.

I would really appreciate any help finding the exact source.