
Parva 7
Drona Parva
The book in which both sides broke the rules they had sworn to keep
Drona takes command
After Bhishma fell, Drona became commander. Duryodhana gave him one instruction, do not kill Yudhishthira, take him alive. His thinking was that with Yudhishthira in hand, another game of dice could be forced, and another exile. Drona tried, but as long as Arjuna stayed by Yudhishthira, no one could get close. So Arjuna had to be drawn away.
The chakravyuha
The Samshaptakas of Trigarta challenged Arjuna. They were men who had sworn either to kill Arjuna or die trying, never to return without one or the other. The rule was that such a challenge could not be refused. Arjuna had to go, and was drawn to the far end of the field. That same day Drona formed the Chakravyuha, a rotating formation, hard to enter and harder still to leave.
In the Pandava army that day, only one man knew how to break it, and he was still just a boy. Abhimanyu, son of Arjuna and Subhadra. The popular telling says he had heard the technique in his mother's womb, and that because Subhadra fell asleep partway through, he learned how to enter and not how to get out. In the main text Abhimanyu says only that he knows how to get in, not how to get out. The womb story became famous in later tradition. He said he would break in, and if the others followed close behind, the way would stay open. He went in. And no one behind him could follow.
Abhimanyu and Jayadratha
Jayadratha stood at the gate of the formation and blocked the rest of the Pandavas. He had received a boon from Shiva that one day he would be able to hold off all the Pandavas except Arjuna. This was that day. Inside, Abhimanyu was left alone. He fought for a long time, until his bow broke, his chariot was destroyed, his charioteer killed, and he fought on holding a wheel. None of this had broken on its own, six maharathas had surrounded him together and brought him down piece by piece, against every rule, no single warrior is meant to be encircled by many at once. Finally Duhshasana's son came forward with a mace. Both fell under mace blows, Duhshasana's son rose first, and as Abhimanyu was trying to stand, struck him on the head. Abhimanyu died there.
Arjuna returned that evening and learned what had happened. That night he vowed that before the sun set the next day he would kill Jayadratha, or walk into fire himself. The next day the Kauravas hid Jayadratha at the very back and put their whole army in front of him. The day wore on toward evening. Then Krishna used his power to bring on a darkness so complete that the sun seemed to vanish, and it looked as though the day had ended. Joy spread through the Kaurava ranks, and Jayadratha stepped out to watch Arjuna burn. At that instant the darkness lifted and light returned. Arjuna loosed his arrow.
The night battle
After that day the fighting continued into the nights as well, itself against the rules. Men fought by torchlight in the dark. Ghatotkacha was the heaviest blow that night, son of Bhima and Hidimba, his demonic power growing stronger after dark. The Kaurava army was being cut down. Finally Duryodhana told Karna to use his weapon, the one Indra had given him in exchange for his armor, usable only once. Karna had been saving it for Arjuna. He fired it at Ghatotkacha instead. Ghatotkacha died, and with him went the one weapon Karna had kept in reserve for Arjuna. Krishna was glad that night, and said outright that Ghatotkacha had saved Arjuna's life.
An elephant named Ashwatthama
Drona could not be stopped. Krishna said that as long as the bow was in his hands, no one could defeat him, and he would set it down only in one circumstance, if he believed his son Ashwatthama was dead. Bhima then killed an elephant named Ashwatthama, and shouted that Ashwatthama was dead. Drona did not believe it, and asked Yudhishthira, since Yudhishthira never lied. Yudhishthira said, Ashwatthama is dead, the elephant. He said the last word so quietly that Drona never heard it, he heard only the first part, not the second. He set down his bow and sat on the ground. Dhrishtadyumna beheaded him in that state. Dhrishtadyumna was Drupada's son, and Drupada had performed that sacrifice for exactly this day, to avenge himself on Drona.
The Narayanastra
Ashwatthama learned how his father had died. He released the Narayanastra. It was a weapon that grew stronger against anyone who fought it. Krishna told everyone to lay down their weapons and lie flat on the ground, it would not harm anyone who did not fight. Everyone did. Bhima refused at first, but was pulled down and made to lie there too. The weapon passed harmlessly overhead.
Note: The order to take Yudhishthira alive, the Samshaptakas' challenge, the chakravyuha, Jayadratha holding the gate, the killing of Abhimanyu, the killing of Jayadratha, the night battle, Indra's weapon used on Ghatotkacha, the elephant named Ashwatthama and the killing of Drona are all in the Drona Parva of Vyasa's Mahabharata. But Abhimanyu hearing the chakravyuha in the womb is not in the main text — there he says only that he knows how to enter, not how to leave. The womb story became famous in later tradition. In this book both sides broke the rules, and the text records both — the Kauravas surrounded Abhimanyu and killed him, the Pandavas killed Drona with a half-truth. The darkness before Jayadratha's death is by Krishna's power of yoga in the text — the version where the Sudarshana discus covers the sun is from later tradition, and it is a separate claim.
Source: Mahabharata (ascribed by tradition to Vyasa), Drona Parva