Many headless trunks were generated on that battlefield. With weapons in their arms, those ghostly trunks, which could see with the eyes in the fallen heads, attacked the enemy soldiers

Expressions researched:
"Many headless trunks were generated on that battlefield. With weapons in their arms, those ghostly trunks, which could see with the eyes in the fallen heads, attacked the enemy soldiers"

SB Canto 8

Many headless trunks were generated on that battlefield. With weapons in their arms, those ghostly trunks, which could see with the eyes in the fallen heads, attacked the enemy soldiers.

SB 8.10.40, Translation and Purport:

Many headless trunks were generated on that battlefield. With weapons in their arms, those ghostly trunks, which could see with the eyes in the fallen heads, attacked the enemy soldiers.

It appears that the heroes who died on the battlefield immediately became ghosts, and although their heads had been severed from their bodies, new trunks were generated, and these new trunks, seeing with the eyes in the severed heads, began to attack the enemy. In other words, many ghosts were generated to join the fight, and thus new trunks appeared on the battlefield.