Question about HMS Ajax

[GREAKLY]

Folks,

I am fairly new to British medal collecting so please bear with me. I wonder, does anybody know about HMS Ajax's detailed (ideally, on a day-by-day basis, but weekly or at least monthly info would be OK) involvement into Russian Civil War in 1920? Or can anybody recommend where such information could be obtained other than Ship's Log copy in the National Archive.

I am collecting British medals related to the Allied Intervention in Russia during 1918-1921. Recently I have been offered a British medal group of a sailor from HMS Ajax who served on her during January and February 1920 (than he was transfered to HMS Vivid which in fact was a Navy barrack in Devonshire). On the other hand, I know that HMS Ajax sailed to Russian shores (and visited a number of towns along the coast of Black Sea) in early 1920. She stayed in the Black Sea pretty much the entire year of 1920. However, I was unable to find when exactly she arrived to the area and when she departed. In my case, to know that is crucial. If the guy was on board during any part of the voyage (even if that was only one day) - I want the group. Otherwise (meaning, the guy transferred before she departed), I am not interested.

I would greatly appreciate any advice. Also, as a more generic question, is there an order of battle/war chronology book for the years of 1918-1920? I have a few for 1914-1918 but nothing after that. Is there an order of battle/war chronology book for the RN (especially for 1918-1920)?I found some information here and there about history of various ships, but the time frame is usually years. And I need at least months (better, weeks or days)...

Thanks in advance.

Gregory