I think that it was only the poms that called it the Charlie-Gee. We still have them as old War Reserve Stores but really, they've been supersceded by lightweight disposable anti tank stuff now. I mentioned this to one of our examiners who was responsible for their annual % checkover who commented that they might be old and the rest of it but they hit hard and you get 20 rounds from a Charlie Gee from the cost of one disposable a/t rocket