Verse 1.18

द्रुपदो द्रौपदेयाश्च सर्वशः पृथिवीपते। सौभद्रश्च महाबाहुः शङ्खान्दध्मुः पृथक्पृथक्।।1.18।।

drupado draupadeyāśhcha sarvaśhaḥ pṛithivī-pate saubhadraśhcha mahā-bāhuḥ śhaṅkhāndadhmuḥ pṛithak pṛithak

Meaning

Yo, Drupada, Draupadi's sons, and Abhimanyu (Subhadra's son, the total bro with the massive guns), each blew their shells, like, totally separately.

Commentary

This conch-blowing was like, the official start of the battle, no cap.