Bolshevik Military Organizations

The Bolshevik Military and Battle Organizations (Russian: Военные и боевые организации большевиков) consisted of illegal armed formations (revolutionaries) of Bolsheviks (RSDLP(b)) in the Russian Empire. They played a leading role among combat detachments of working class and revolutionary instigation in the Russian Armed Forces, with the goal of creation and fortification of the "Revolution Armed Forces".

Source: Wikipedia — Bolshevik Military Organizations (CC BY-SA 4.0)