High Quality Content by WIKIPEDIA articles! Ouvrage Hochwald is an ouvrage of the Maginot Line. Located in the Fortified Sector of Haguenau in the community of Drachenbronn-Birlenbach, it was designed to protect the Northern Vosges region. The Ouvrage Hochwald is often considered as two separate ouvrages because of the anti-tank ditch separating the western and the eastern portions of the ouvrage, and is the largest of the Maginot ouvrages in Alsace. Uniquely, original plans for the position included an elevated battery to the rear with long-range 145mm or 155mm gun turrets.