Percy F. Westerman 
Rounding Up the Raider [PDF ebook] 
A Naval Story of the Great War

Former Royal Navy officer Percy F. Westerman captivated a generation of young readers with his series of juvenile action-adventure tales based on his own wartime experiences. Rounding Up the Raider is chock-full of the unexpected plot twists, thrill-a-minute battle scenes, and heroic deeds that catapulted Westerman’s books to literary acclaim.