Allies by Alan Gratz

Welcome to D-Day. Dee, a young U.S. soldier, is on a boat racing toward the French coast. And Dee — along with his brothers-in-arms — is terrified. He feels the weight of World War II on his shoulders. But Dee is not alone. Behind enemy lines in France, a girl named Samira works as a spy, trying to sabotage the German army. Meanwhile, paratrooper James leaps from his plane to join a daring midnight raid. And in the thick of battle, Henry, a medic, searches for lives to save.