Fwiw, techmogogy's picture is the "best." It's not historically accurate, but there are no typos or grammatical errors that the other plates had. It answers the question we get all the time too! I got tired of my Swiss family pointing out the errors, so I bought some of SAVs spray paint, painted the plates to match the truck and put Swiss stickers on that.
Oh, btw brace yourself for some Austrians to point out that the trucks are not Swiss
Depending upon the Canton, regional language of choice, what you would see
in print is below, the English form "Swiss Army" is not one of them, except as a
translation. Personally I like the French, fits nicer on a piece of tin too.
German: Schweizer Armee,
French: Armée Suisse,
Italian: Esercito Svizzero,
Romanisch: Armada Svizra