See more at Wikipedia.org...

Abhimanyu (Sanskrit) [from abhi towards + the verbal root man to think] Son of Arjuna by Subhadra, sister of Krishna. In the mystic interpretation of the Bhagavad-Gita, Abhimanyu represents high-mindedness, akin to dhyana (meditation). Abhimanyu killed Duryodhana's son Lakshmana on the second day of the great battle of Kurukshetra, while he himself was slain on the thirteenth day. The Mahabharata tells of Abhimanyu's previous birth as Varchas, son of Chandra, and the agreement entered into by Chandra with the devas to send his son to be born as the son of Arjuna in order to fight against the "wicked people." Chandra imposed the condition, however, that Abhimanyu should be slain by the opposing forces so as to return to him in his sixteenth year.

See more at Wikipedia.org...

Abhimanyu (Sanskrit) [from abhi towards + the verbal root man to think] Son of Arjuna by Subhadra, sister of Krishna. In the mystic interpretation of the Bhagavad-Gita, Abhimanyu represents high-mindedness, akin to dhyana (meditation). Abhimanyu killed Duryodhana's son Lakshmana on the second day of the great battle of Kurukshetra, while he himself was slain on the thirteenth day. The Mahabharata tells of Abhimanyu's previous birth as Varchas, son of Chandra, and the agreement entered into by Chandra with the devas to send his son to be born as the son of Arjuna in order to fight against the "wicked people." Chandra imposed the condition, however, that Abhimanyu should be slain by the opposing forces so as to return to him in his sixteenth year.