In Metro 2033, the 1905 Confederation is an (assumed) left-leaning ideological confederation that fully controls the Barrikadnaya, Ulitsa 1905 Goda (which the Confederation is named after), and Begovaya stations. The next 2 stations in that line are abandoned and cut off from Begovaya for unknown reasons. Very little is known about the faction apart from this, though its proximity to Hanza would suggest that the two are allies or at least not hostile to each other.
Metro Last LightEdit
Although never directly mentioned in Metro Last Light, Miller's map at D6 shows that the Fourth Reich has taken over Barrikadnaya, one of the stations which used to belong to the 1905 Confederation and also happens to be connected to Hanza.