In 1944 Hobie Hanson's father is flying B-24s in Europe, so Hobie decides to donate his beloved German shepherd, Duke, to Dogs for Defense in the hope that it will help end the war sooner--but when he learns that Duke is being trained for combat he is shocked, frightened and determined to get his dog back.

Teenager Aman and his mother lose their loyal spaniel Shadow while escaping Afghanistan to flee to England. Now they must depend on a friend and his grandfather to enable Shadow's return.

In Cosham, England, in 1917, Darling, a mischievous collie, must leave the children who love her when she is chosen for training as a mercy dog, seeking out injured soldiers on the battlefield and leading medics to them.

Newly arrived on the Western front and assigned as a medic, Rivera finds himself in the middle of the Battle of the Bulge, cut off behind enemy lines--and his only companion is a Nazi trained Doberman pinscher.

When Justin's older brother, Kyle, is killed in Afghanistan, Justin can't believe that his brother is really gone. Except there's one thing that Kyle left behind ... Max is a highly trained military canine who has always protected his fellow soldiers. But when he loses his handler and best friend, Kyle, Max is traumatized and unable to remain in the service. He is sent home to America, where the only human he connects with is Justin, and he is soon...

"Henri has an urgent mission from a top French Resistance agent in the fight against the Nazis--and the agent also happens to be his mom. He has to deliver a secret map to another town before the German soldiers can catch him. But on his way, he encounters Ace, an American paratrooper dog who's landed far away from the beaches of Normandy, and Elle, a war orphan who needs his help. Ace needs to get back to the frontlines so he can protect his handler,...

Following orders from the United States Army, several young Japanese American men train K-9 units to hunt Asians during World War II.

After her owner is arrested while poaching, Jet is requisitioned by the British Army and sees duty on the beach at Dunkirk, searching for survivors of Germany's bombing raids on English cities, and in Italy at the end of the war.

Twins Charlie and Kate give their yellow lab Buster to the Coast Guard during WWII only to discover a German threat in their hometown.