Calling this plane military plane is rather overstatement, but still it is supposed to be classified as such. It was designed around 1924 by Boris Adaridi and it shares several similarities with Gluhareff S.22. See this for my blog posts regarding B. Adaridi & Gluhareff. Also wiki page.
As always, I have plenty more pics so if interested, pls. contact me. Also visit Finnish aviation museum where this plane is located.