Citadel from the powder magazine Bastion 20 View from Porte des Tunis, Siege of Strasbourg, Franco - Prussian War

War damage, view along river, 2 German soldiers one carrying a gun in foreground 'Citadel from the powder magazine Bastion 20 view from Porte des Tunis' inscribed in album, the last word is inclear. Albumen print. Photographer may be Paul Sinner, 1870.