Hi
I just came across this thread today. It has been interesting to see the 'other' side of the search. My grandfather and his cousin were Lithuanians who emigrated to Scotland the found they had either to join the British Forces during WW1 or be deported to Russia. They arrived in Archangel in 1917. Many men moved on and joined Russia 'white' units. Most failed to return to their families in Scotland. My grandfather and his cousin remained in the area and were recruited into the Slavo British Legion in the following spring when Maynard and his forces arrived. They were probably in the unit that mutinied although I believe only a small number of men, possibly Bolshevik prisoners who joined the group, but the legion was downgraded to a labour unit. The men returned home in the evacuation from Archangel.
It is a fascinating bit of history, information is had to find and I most certainly agree the fear of comunism was at the heart of it. I found the WhitePapers relating to the decision to deport the foreign men online at the National Archives website. They are described as Russian, regardless of origin.
I hope you find what you are looking for.
Frances