Satan

At some point, about three hours into marching towards enemy lands, the vampire army started to disperse to their specific locations. 

An Aurelius clan representative stood at the junction and instructed the leaders on where exactly they were supposed to lead their troops. 

Max, who was fighting on the south-west front underneath the dragons, diverted the march of the Bloodfall clan a bit to the left while the rest of the army either went straight or turned a bit right. 

Mass-managing an army of 120 million was a task in itself and Regus Aurelius could not personally oversee everything. 

The role of the Aurelius clan, its various god's, the various clan leaders, the various legion commanders under those clan leaders could not be understated in this grand war. 

For the vision that had been drawn up in the war council room to turn into reality, the efficient completion of the drawn up strategies was the key.