Like I know - Ramayana, Mahabharata, Battle of the 10 Kings and the war between Indra and the king of Asuras (Vitmitra).
But there are many other battles and wars that took place which are slightly mentioned at places but their whole story is never given out fully.
What are the other wars between Devas and Asuras. Or a war where Devas and Asuras have to unite to beat somebody.
The fight between brihaspati and chandra
The Moon and the Lunar Dynasty There was a sage named Atri. Atri performed very difficult tapasya. So difficult was the tapasya that Atri’s energy was thrown up into the sky. The sky could not bear the energy and hurled it down onto the earth. This energy then gave birth to Soma or Chandra, the moon god. Brahma took Chandra up into his chariot and drove the chariot around the earth twenty-one times. From whatever energy was left after Chandra had been created, the herbs were born. Chandra also performed very difficult tapasya. One padma year consists of 10,000,000,000,000 normal years. For one hundred such padma years, Chandra meditated. After the meditation was over, Brahma appointed Chandra lord over seeds, herbs, brahmanas and the oceans. Chandra also performed a rajasuya yajna (royal sacrifice) as a celebration of his lordship. This gave him a lot of pomp, glory, wealth and respect. But all this merely served to turn Chandra’s head. The guru (teacher) of the gods was the sage Brihaspati. Brihaspati had a wife named Tara and Chandra abducted Tara. Despite the gods and the sages asking Chandra to return Tara., the moon god would not listen. A terrible war then raged over Tara, the gods fighting for Brihaspati and the demons fighting for Chandra. Shukracharya, the guru of the demons, fought with Chandra and Shiva fought with Brihaspati. This war (samgrama) came to be known as tarakamaya samgrama, since it was fought over Tara. Finally Brahma intervened and a truce was called. But Chandra and Tara had by then had a son, and Brihaspati refused to accept this son as his own. This son was Budha. As you already know, Budha married Ila and they had a son named Pururava.
—bramha purana(http://www.bharatadesam.com/spiritual/brahma_purana.php )
Andhaka and lord shiva — http://www.bharatadesam.com/spiritual/shiva_purana.php
Banasur annd krishna— https://en.wikipedia.org/wiki/Banasura
fight between vaali and raavana— How did Vali defeat Ravana? What's the story?
Parashurama and Kartavirya Arjuna:— https://en.wikipedia.org/wiki/Kartavirya_Arjuna
Ravana and Kartavirya Arjuna:— https://en.wikipedia.org/wiki/Kartavirya_Arjuna
Shiva and jalandhara:— https://en.wikipedia.org/wiki/Jalandhara
