into_battle_(novel) | followedby | the_violet_keystone <tsp> above_the_veil | followedby | into_battle_(novel) <sep> into battle is the fifth book in garth nix's the seventh tower series, published in 2001 by scholastic 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 milla's icecarl army quickly destroys and conquers the red and orange levels, terrorizing all with a violet wave of destruction, produced by her half of the violet keystone- which she thinks is just a normal sunstone at first, but slowly begins reconsidering the cover design and art are by joan moloney and steve rawlings respectively 
above the veil is followed by into battle and the violet keystone.into battle is the fifth book in garth nix's the seventh tower series