" Acronyms also weren’t terribly common until World War II, where they were deployed with aplomb. Unsurprisingly, most of the general words we have in English today that have true acronymic etymologies had their origins in the military: the aforementioned “radar,” “GI” (originally “galvanized iron,” if you can believe it, but misconstrued by soldiers and others as “government issue”), “snafu” and “fubar” (“ situation normal: all fucked up” and “fucked up beyond all recognition,” brought to you by government bureaucracy). It’s true that a few of them snuck into English before the early twentieth century, but very few: “RSVP” (répondez s’il vous plaît) and “AWOL” (absent without leave) are the only two that could be considered general vocabulary, and some people will complain that one of those is not a proper acronym but an initialism and so doesn’t count.* 4 "

― Kory Stamper , Word by Word: The Secret Life of Dictionaries