Complex sentence: The Rudhra Vanniyan & his four sons requested Durgai Amman to help them in combating Vatapi which she accepted and came along with them with her "Boodha" battalion.
Split into simpler sentences: The Rudhra Vanniyan and his four sons requested Durgai Amman to help them in combating Vatapi. She accepted and came along with them with her "Boodha" battalion.