Danube-Auen National Park Danube-Auen National Park Donau-Auen National Park () covers 93 square kilometres in Vienna and Lower Austria and is one of the largest remaining floodplains of the Danube in Middle Europe. The German word Aue (variant Au) means "river island, wetland, floodplain, riparian woodland", i.e. a cultivated landscape in a riparian zone. The words Aue and Au occur in a large number of German place names—including Donau, the German word for the Danube River—and refer to forests, meadows, and wetlands in river and stream lowlands and floodplains. The Danube-Auen National Park protects a large area of lowland forests, meadows, wetlands, and
Army of the Danube for the defense of the Republic. The Swiss passes commanded access to northern Italy; consequently, the army that held those passes could move troops to and from northern and southern theaters quickly. The river was a formidable barrier to what the French perceived as Austrian aggression, and the state that controlled its crossings controlled the river itself. Finally, control of the Upper Danube would allow France to move its troops from Italy to the North Sea, or any point in between, offering immense strategic value. Toward this end, in the early November 1798, Jourdan arrived in Hüningen, near the Swiss