how do we make early varangian guard????

there is not enough knowledge about this unit.this unit was in the crusaders unit production txt file in mtw folder. constantinople is the only request for this unit like sherwood foresters' mercia so i'd made a little mode to make this unknown unit by changing rebellious rate of const. and then i started a new campaign with byzantines in the early period and retreated my all units from there to cause a rebellion. next turn rebels came without evg :embarassed: :embarassed: but i want to see them help me . In addition i search the internet but i didn't find anything about them.