Series Number Id: GSGS 3695. Armistice line, stages of advance into Germany and Rhine bridgeheads, November 1918. Detail grey; water blue. Blue overprint shows armistice line and stages of advance and boundaries of Belgian, British, French and American armies to the Rhine, and zones and Rhine bridgeheads at Köln, Koblenz and Mainz. "The 10 Km neutral zone [around bridgeheads] is shaded"., Location: Research Collections; Fonds: WW1 Trench Maps: France; Box number: PC21; envelope_number: 662.