Yudha Kanda also known as Lanka kanda, this book describes the battle between the army of Rama, constructed with the help of Sugriva, and Ravana. Having received Hanuman's report on Sita, Rama and Lakshmana proceed with their allies towards the shore of the southern sea. There they are joined by Ravana's renegade brother Vibhishana. The monkeys named Nala and Nila construct a floating bridge (known as Rama Setu) across the ocean, and the princes and their army cross over to Lanka. A lengthy battle ensues and Rama kills Ravana. Rama then installs Vibhishana on the throne of Lanka.