The First Battle

A series of novels about the adventures of wild cats and how they survive in their territory, written by Kate Cary and Cherith Baldry in collaboration with editor Victoria Holmes and writer Ty Sutherland, published under the common pseudonym Erin Hunter, as well as comic book author and artist Dan Jolley, a manga book screenwriter.
This is a story about four tribes of wild cats that fight among themselves, and they also have various adventures.