For those (like the author) who wonder why such a weird mishmash of different conventions was used to come up with the DACH abbreviation, it's because the word "dach" means "roof" in German, so there's a lot of wordplay that's done to talk about all these different regions which are 'under one roof'. "Dachsprache" (roof-language) is actually a term used by some linguists (sometimes translated to umbrella-language) to…
I always thought it was because of the stickers we had to put on our cars if we went abroad. Germany had “D” Austria “A” Switzerland “CH”
Such a missed opportunity to not have named the acronym CHAD.