I know these photos. But the exact colouring of a banner and a batallion of a badge (?) to me are not known.
The most widespread colours of shock and assault units - red and black.
Most likely your assumption true.
It seems to me, that the small tag is consolidated on a stick. Though it is possible, I simply do not see a rifle on it a photo.
Try to ask a question to experts at the Siberian forum (
www.siberia.forum24.ru)
There good guys. If they know something - will help.
Write in English. Many quite know this language.
I have looked the directory Valery Klaving.
1st Immortal Shock Regiment entered with 8th Kamskiy into structure of the Siberian separate army. Then has been poured in in structure Separate Siberian Shock brigade.