https://en.wikipedia.org/wiki/JCUKEN
Remember the tanks that had the marking painted on them as Z ( zed in English or zee in American English).
There is no Q or ( cue) sound in Russian Cyrillic , no way to use it.
The Russian keyboard is not QWERTY it is JCUKEN.
Take a look at the letter placement and see which letter takes up the place of a Q.
Yes it’s a unique Russian letter that is written as a backwards Z.
Just another coincidence to add to the list.
They marked their tanks with a Q👍
I also notice that on the Ukrainian keyboard, you have
И and I
These look familiar?
https://i.redd.it/uom9hl276g231.jpg
In cyrillic it is И = I / placed on the keyboard where the Q is.
https://en.wikipedia.org/wiki/I_(Cyrillic)
But your find is very interesting!