Bhīṣma's conch was a celebratory signal, seeking victory🔗

tasya sañjanayan harṣaṃ kuru vṛddhaḥ pitāmahaḥ siṃha nādaṃ vinadyoccaiḥ śaṇkhaṃ dadhmau pratāpavān

Then Bhīṣma, the mighty patriarch of the Kuru dynasty, their glorious grandfather, roared like a lion and blew his conch, giving Duryodhana joy

To relax and allow whatever happens to happen is the sure sign of an evolved spirit.

Bhisma was highly respected for his valor and sagacity. It is one of the greatest ironies of Mahabharata that wise men like Bhisma and Drona chose to be on Duryodhana's side, knowing fully well that whatever path Duryodhana was following was morally incorrect.

In the highest spiritual sense there is no right or wrong morally. Everything is neutral. Bhisma and Drona were highly learned in the scriptural truths. Moreover, they were fully aware that Krsna was a divine incarnation. The very fact that Krsna sided with the Pandavas was a clear indication to them how the war would unfold. They had no fears about their own deaths; and more importantly, they had no guilt about what they had embarked upon.

Men like Bhisma, Drona and Krpacarya trusted their awareness. Duryodhana was their prince and they were committed to him. They were certain that Duryodhana would perish and they would too, along with him. To these great warriors, dying on the battlefield was the duty of a ksatriya, a warrior. What was more important to them was that they were rooted in the awareness of the present moment, carrying out their duty. Their awareness transcended the moral rights and wrongs established by society and religion. They disapproved of Duryodhana's insult of the Pandava princes and Draupadi in the court but did not protest. They disapproved of Duryodhana's instigation of this war and yet took his side, knowing fully well that what lay ahead was destruction. This was not foolishness or resignation.