The Bhishma Parva (Sixth Book) contains -
Jambukhanda-vinirmana Parva:
The armies are arranged across the battlefield as the great war is about to begin.
Bhumi Parva:
Sanjaya describes the earth, its regions, and the world in response to Dhritarashtra's questions.
Srimad Bhagavad Gita Parva:
Krishna teaches Arjuna the Bhagavad Gita, guiding him through duty, devotion, and spiritual wisdom.
Bhishma-vadha Parva:
Bhishma falls on a bed of arrows after ten days of fierce fighting, marking a turning point in the war.
The Drona Parva (Seventh Book) contains -
Drona-abhisheka Parva:
Drona is appointed commander of the Kaurava army after Bhishma's fall.
Samsaptaka-vadha Parva:
Arjuna battles the Samsaptakas, warriors sworn to fight him to the death.
Abhimanyu-vadha Parva:
Abhimanyu is trapped inside the Chakravyuha and killed after a heroic stand.
Pratijna Parva:
Arjuna vows to kill Jayadratha before sunset to avenge Abhimanyu's death.
Jayadratha-vadha Parva:
Arjuna fulfills his vow by slaying Jayadratha in a dramatic battle.
Ghatotkacha-vadha Parva:
Ghatotkacha sacrifices his life, forcing Karna to use his most powerful weapon.
Drona-vadha Parva:
Drona lays down his weapons after hearing of Ashvatthama's supposed death and is killed.
Narayana-astra-mokshana Parva:
Ashvatthama unleashes the devastating Narayana Astra against the Pandava army.
The Karna Parva (Eighth Book) contains -
Karna Parva:
Karna takes command of the Kaurava army and leads the war against the Pandavas.
Karna-vadha Parva:
Arjuna kills Karna in a decisive duel, bringing down the Kauravas' greatest champion.
The Shalya Parva (Ninth Book) contains -
Shalya-vadha Parva:
Yudhishthira kills Shalya, the final commander of the Kaurava army.
Shalya Parva:
The remaining Kaurava forces continue the desperate struggle after Shalya's fall.
Hrada-praveca Parva:
Duryodhana hides in a lake after the destruction of his army.
Gadayuddha Parva:
Bhima defeats Duryodhana in a fierce mace duel, effectively ending the war.