Stream Napoleon Crosses the Alps: The Road to Marengo Online Free – Watch Full Movie from Home at 123Movies. . In 1800, France's new First Consul - Napoleon Bonaparte - faces a precarious military situation, with huge Austrian armies poised to strike against the French Republic. But Napoleon will not wither in the face of such a crisis. Instead, he embarks on one of the most famous and daring strategic manoeuvres in history - a march across the Alps - to turn the tables on France's enemies