The Loved Ones cache message to Henriette from her mother, recorded before the latter was assimilated by the machines.
During the rise of the Cavalry of the Dead in Moscow, one of the ghosts appears to recognise a nearby Void Engineer. The ghost turns out to be the Void Engineer's uncle, who died fighting in the Great Patriotic War, and the Void Engineer assures his uncle's ghost that they beat the fascists and his brother lived all the way to Berlin and had a family afterwards.
