Those who have purchased Valiant Hearts: The Great War, the well received puzzle adventure game developed by Ubisoft Montpellier, on iOS can download Valiant Hearts: Dogs of War for free. Valiant Hearts: Dogs of War is an interactive comic book which is set in the universe of Valiant Hearts. The comic book tells the story of Walt, the canine companion from Valiant Hearts: The Great War. Walt, along with his sister Cassie, will take part in adventures. Dogs of War chronicles the adventures of Walt and Cassie as they are navigating the trenches of the Western Front during the Great War. One of the dogs is destined to become a messenger, while the other will become a medic rescuing fallen soldiers. Those who own Valiant Hearts: The Great War can download Dogs of War for free now.