As in this WWII poster: Are they the same thing, or are there differences in expression? Why do native speakers choose the first one? header("Access-Control-Allow-Origin: *"); ? > English Vision You’re slightly misquoting. The famous poster said “Hitler will send no warning” (singular), and referred to a hypothetical use of chemical weapons on British civilian targets, which it turned out didn’t happen.* That is to say, it refers to a single attack; the first attack that could happen. Alternatives therefore would also include “Hitler won’t send a warning” or “Hitler won’t send any warning”. That point aside, you are correct...