Belleau Wood, France, June 1918. After three weeks of battle, the US Marines stopped the German advance a few miles from Paris. They earned the name of "Devil Dogs" and made victory possible for the Allies. Gilles Lagin has given himself a mission: to preserve the memory of the American soldiers who fought in Belleau Wood. For 40 years, he has led families into the footsteps of their ancestors, the 1918 Devil Dogs.

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