Daily Reading: Bhagvad Gita As it is- Page-32

Bg 1.12

tasya sañjanayan harṣaṁ
kuru-vṛddhaḥ pitāmahaḥ
siṁha-nādaṁ vinadyoccaiḥ
śaṅkhaṁ dadhmau pratāpavān

Translation: 

Then Bhīṣma, the great valiant grandsire of the Kuru dynasty, the grandfather of the fighters, blew his conchshell very loudly, making a sound like the roar of a lion, giving Duryodhana joy.

Purport: 

The grandsire of the Kuru dynasty could understand the inner meaning of the heart of his grandson Duryodhana, and out of his natural compassion for him he tried to cheer him by blowing his conchshell very loudly, befitting his position as a lion. Indirectly, by the symbolism of the conchshell, he informed his depressed grandson Duryodhana that he had no chance of victory in the battle, because the Supreme Lord Kṛṣṇa was on the other side. But still, it was his duty to conduct the fight, and no pains would be spared in that connection.

Bg 1.13

tataḥ śaṅkhāś ca bheryaś ca
paṇavānaka-gomukhāḥ
sahasaivābhyahanyanta
sa śabdas tumulo ’bhavat

Translation: 

After that, the conchshells, drums, bugles, trumpets and horns were all suddenly sounded, and the combined sound was tumultuous.

Bg 1.14

tataḥ śvetair hayair yukte
mahati syandane sthitau
mādhavaḥ pāṇḍavaś caiva
divyau śaṅkhau pradadhmatuḥ

Translation: 

On the other side, both Lord Kṛṣṇa and Arjuna, stationed on a great chariot drawn by white horses, sounded their transcendental conchshells.

Purport: 

In contrast with the conchshell blown by Bhīṣmadeva, the conchshells in the hands of Kṛṣṇa and Arjuna are described as transcendental. The sounding of the transcendental conchshells indicated that there was no hope of victory for the other side because Kṛṣṇa was on the side of the Pāṇḍavas. Jayas tu pāṇḍu-putrāṇāṁ yeṣāṁ pakṣe janārdanaḥ. Victory is always with persons like the sons of Pāṇḍu because Lord Kṛṣṇa is associated with them. And whenever and wherever the Lord is present, the goddess of fortune is also there because the goddess of fortune never lives alone without her husband. Therefore, victory and fortune were awaiting Arjuna, as indicated by the transcendental sound produced by the conchshell of Viṣṇu, or Lord Kṛṣṇa. Besides that, the chariot on which both the friends were seated had been donated by Agni (the fire-god) to Arjuna, and this indicated that this chariot was capable of conquering all sides, wherever it was drawn over the three worlds.