In response to the roaring sounds from the Kaurava side, Krishna and Arjuna reply.

Here, the narration shifts from the Kaurava army to the Pandava army. A magnificent chariot drawn by a white celestial horse and bearing Hanuman's flag. On top of it are Krishna and Arjuna, who blow their conch shells in response to the roar of the Kaurava army.

This is not merely a clash of sounds. It's a scene where, to the opponent who first expressed their intent to fight, we quietly but clearly respond that we are also ready to fight. Moreover, the two conch shells held by them are considered "heavenly," and their sound reflects the special position of the two individuals leading this battle.

Japanese Translation from the Geeta Press Edition - Chapter 1, Section 14: "The Conch Shell of Heaven"

Then, standing on a great chariot adorned with white banners and pennants, Madhu and the Pandavas held divine conch shells. || 14 ||

Translation

At that time, Krishna and Arjuna, who were seated in a magnificent chariot drawn by white horses, also blew their respective celestial conch shells.

Annotative Translation

The question posed by Dritarashtra was: "After gathering to fight, what did my sons and the Pandavas do?"

In response to this, Sanjaya said: Up until this point, I have been describing the actions of the warriors on the side of Dhritarashtra.

And from here, in five sections, he describes the actions of the Pandavas.

This tank was perfect in every way.

The entire structure was covered with gold plates, making it appear very bright and beautiful, and its construction seemed to be extremely sturdy.

Flags were hung on all sides, and small bells were attached to them.

The wheels were large and sturdy.

A tall flag with the symbols of the moon and stars shone like lightning, and Hanuman was depicted on it.

Regarding this flag, Sanjaya reported to Duryodhana that its height and length were one Yojana, which is equivalent to eight miles.

That color was, like a rainbow in the clouds, diverse and colorful.

It spread out so widely, yet it was extremely light, and nothing could obstruct its path.

Amongst a cluster of trees, He passed through them easily without touching any of them.

This tank was connected to four celestial horses.

They were all white, very beautiful, well decorated, well trained, and strong and agile.

These horses were selected from among one hundred celestial horses that had been received as gifts from King Chitralata of Gandharva.

The peculiar characteristic of these horses was that, no matter how many were killed in battle, the total number would never decrease from one hundred.

Furthermore, They could go anywhere, whether it was on land or in the heavens.

This also applied to tanks.

This tank, after burning down the forest of Kanda, was given to Arjuna by the god of fire as a sign of joy.

Krishna and the great warrior Arjuna, who were seated in this magnificent chariot, heard the roar of sound that was produced by the blowing of conch shells, drums, and other military instruments by the warriors of the Kaurava army, including the great Bhishma.

Then, they also blew their respective conch shells to announce the start of the battle.

Krishna and Arjuna's conch shells were not ordinary conch shells.

They were of an extraordinary kind, appearing brilliantly beautiful, and also being very rare in their properties.

Therefore, they are called "heavenly conch shells."