Abhimanyu and the Chakravyuha

Abhimanyu learned to break into the chakravyuha before he was born.

While he was still in Subhadra's womb, Arjuna was explaining that formation to her — how it coils in seven gates, how you breach them one after another. The story says the unborn child listened closely. But when Arjuna began to explain how to get out, Subhadra fell asleep. Hearing no reply, Arjuna stopped the telling there.

Abhimanyu learned the way in. He never learned the way out.

On the thirteenth day at Kurukshetra, the Kauravas drew up the chakravyuha. Arjuna had been lured far away by the Samshaptakas, and no one else in the Pandava army that day knew how to breach it.

Sixteen-year-old Abhimanyu told Yudhishthira, "I know how to get in. Follow close behind me and the gate will stay open."

He broke the first gate and went through. But Jayadratha, holding a boon from Shiva, sealed the entrance behind him against the Pandava soldiers. The gate closed, and the boy was alone inside.

He fought on alone. Drona, Kripa, Karna, Duryodhana, Dushasana — they came at him one after another. When his chariot was smashed he picked up a wheel and fought with that. The rules of war were broken that evening: a surrounded, disarmed boy was struck by many at once.

By dusk the whole field had gone quiet. When Arjuna returned he made a vow, and the next day was Jayadratha's last.

Moral: It was not Abhimanyu's courage that was incomplete — it was his lesson. Learn a thing all the way to the end. Knowing how to get out matters as much as knowing how to get in.