British Intelligence Officer in Russia

[OldBraggs]

I have been asked to look at a collection of items belonging to a British Army officer who was in Russia as an Intelligence Officer in World War One. Amongst his things is this interesting Code Disc which helped him send coded morse messages. Not seen anything like it before. Lot includes a signed photo of Sydney Reilly, menus signed by people like Paul Dukes, etc.
The outer part of the disc spins to reveal more code words.

[Richie B]

Interesting object - how's your Russian ?

[Krakow1]

My Russian is ok, owing to having grown up in a communist Country and having that language in school as compulsory. Real quick
This looks like a shortcut in morse to some commands, to be more specific I think on the bottom is to correct artillery fire :
Bottom part first word is : perelet (flight)
nedolet : undershot (short round)
Ylk wprawo : right
Ylk wlwo : left
charaszo : ok