Into Battle is the fifth book in Garth Nix's The Seventh Tower series, published in 2001 by Scholastic. In the book, the Icecarls are preparing to attack the Chosen's Castle to protect the Veil, which lies vulnerable as a mysterious force of evil begins to reveal itself. In this book, the Icecarls are fed up with the Chosen, and prepare to attack the Castle with War-Chief Milla Talon-Hand at the lead. Milla, trained with a Sunstone, and wielding a talon of Danir, is prepared to defend her army from anything, no matter what the cost.