तस्य सञ्जनयन्हर्षं कुरुवृद्धः पितामहः। सिंहनादं विनद्योच्चैः शङ्खं दध्मौ प्रतापवान्॥
tasya sanjanayan harsham kuru-vriddhah pitamahah simha-nadam vinadyochchaih shankham dadhmau pratapavan
Translation
Then Bhishma, the grand old man of the Kuru dynasty, the glorious patriarch, roared loudly like a lion and blew his conch to cheer Duryodhana.
Commentary
Bhishma's lion-like roar and conch-blowing is meant to reassure Duryodhana and boost the morale of the Kaurava army. It marks the formal beginning of battle preparations.
couragedutycourage, strength