Armies in large numbers were useless against mages, as they might have simply thrown forbidden curses at them in their towers. One forbidden curse could have easily wiped out about 1000 elite troops in just one thought. Mages could have easily killed over 10000 conventional troops.
Platoons of 20 or 40 units who were all wearing magic armor, on the other hand, became the ideal groups for taking on mages.
The brutal battle ended up mages of the Elemental Hand suffering heavy casualties. Blood splattered everywhere. The casualties at the side of the Qin troops were hardly small. However, there were hardly any blood spilled when they died, with some being burned to a crisp while others were frozen into ice blocks.
Even those who were shredded by Wind Blades had their wounds shaved and cleaned by the elemental powers within, resulting in no blood spilling off of the wounds.