TYB
>STD ะจะตะฒัะพะฝ
kind of shevron or symbol
slavic runes it seems, which appear to be not unsimilar to scandinavian runes
Search above russian expression on yandex and click images (pic2 is among results from vk.com โ also links to that Z they have on their tanks)
https://vk.com/wall-19332748_96332
From what I found might also be linked to some special ops troops, possibly FSB, Wagner
โฆ no idea. didn't know they have that. would have to read more
via: https://dzen.ru/a/YbO2scoOJVfuF7Yr
where it is quite well explained
says STD carries the meaning of:
"Warriors bring good and peace through strength."
kek