To return to the original post: I recently stumbled across an article which appeared to be claiming that the Whites in early 1919 were still attacking in close rows on occasion. I on't know if it is true or not of course, but there are claims that they were.
(I say "appeared" because it was in Russian and I was using a auto-translate function. Following that lead I found an article in Sergeant Magazine on these, so called "Psychic Attacks", but I'm not up to translating it.)