From my understanding Opalchenie, also spelt Opolchenie, are militia troops, often Russian however I have found two online sources that indicate they can also be Bulgarian. These are 28mm Essex Miniatures from their Napoleonic range, historicaly raised in 1806 they featured prominently in the campaigns againt Napoleon.
As an alternate these particular figures reinforce my Russian Colonial units attempting to drive the hated British out of India in around 1870 - 1880, with a bit of steam tech thrown in for good measure.
