I know that a Czech author J.M.Troska had a character write PAX on the Moon with a death ray in his book Captain Nemo I. Nemo's empire (1939). I only know about these books because I got my hands on my dad's old Sci-Fi books so I consider him pretty obscure. But recently somebody mentioned this trope on a predominantly English forum.
So I have two questions:

1. Did Troska create this trope or did he copy it from somewhere?
2. What is considered the best know use of this trope in the genre?

Edit: To clarify the trope, it could be PAX in any language.