The Boat Runner by Devin Murphy

Jacob Koopman lives in Holland with his family as war breaks out and suddenly his world turns upside down. His father, eager to land a big account with Volkswagen for his lightbulbs, travels to Germany frequently and encourages Jacob and his brother to improve relations with them by sending the boys to a German summer camp. Soon after war is declared , the Koopmans begin to feel the sting of the Third Reich and also from the relentless bombs of the Allied troops. Jacob begins to help his Uncle sabotage the Germans while pretending to aid in ferrying troops and supplies using his Uncle's boat.
With the war raining down hardships and Jacob's losses adding up he begins to lose his way and finds he can no longer help either side but just survive. He begins as a boat runner and ends as a boat runner. This tragic tale is one of many in an ugly war where families were torn apart and heroes made where yesterday children stood.