"An unforgettable historical, high-octane adventure." -- Dav Pilkey, author-illustrator of the Dog Man seriesMagdalys and the squad are flying south on pteroback. South to rescue her older brother. South to war.The squad links up with the dino-mounted troops of the Louisiana Native Guard, an all-black regiment in the Union Army fighting to free their people. They're led by General Sheridan, surrounded by enemy forces in Tennessee and...