Sicherungsstellung Nord
 - The WW1 German Northern Front in the Southern Jutland, Denmark. 1916-1920.
Forts and Defence Lines in Scandinavia

 The Author of this Site

 The Background
 The Landscape 
 Building the Position
 The Infantry and Trenches
 The Light Batteries
 The Heavy Batteries
 The Camps
 POW´s and other Prisoners
 Other Facilities
 Other Batteries
 To the Start



 Other Facilities in the Defence Line.
 To communicate between the batteries and from the defence line to the staff and observation stands
 telephones, radio and flash-signals were used.
 (The flash-signals in German are Blink-signal, the posts Blink-stations and the operator is a Blinker.) In
the following referred to as Blink-stations.   
 We know not much about the telephone system, because nothing is left, we can assume a standard

military field telephone system.

 We know more about the  Blink stations. We can assume that is has been some kind of a coded Morse
system. A number of blink stations were constructed in the area, both as towers and placed into
barrows high in the terrain. In the last case, holes were made in the side, so the flash-signals could be
 Blink-stations were placed at Knivsbjerg, Venbjerg, between Venbjerg and Hoptrup, Stenhøj, Björnskov,
Toftlund,  Vongshøj, Gasse Höje, Bredebro, Ballum, Juvre, Havneby and List on the island of
 Furthermode there were placed two blink-stations in front of the defence-line at Höjrup and Fjellumhöj.
 The lamp was driven by acetylene gas, and had an opening of 50 cm. Beside this an acetylene gas tank
 was needed and an oxygen battery were needed.
 The flashes (blink) were made by pushing a disk between the flame and the mirror in the lamp.
 It has been told, that the flashes in clear sunshine without field glasses easily could be seen at a
 distance of 15 km.

Several reports from the battlefield confirmed, that the flash signals were the most effective and stabile
 field communication at the time.
 Signal flares could not be seen under shelling, telephone cables were vulnerable and the radios were
not stabile.
 In Jena, 1921, a memorial for the fallen Blinker was raised in recognition of their great importance.
 The memorial was restored a
 few years ago.
                  WW1, Sicherungsstellung Nord, German stronghold in Denmark. Memorial (Denkmal) for  the German Blinker WW1, Sicherungsstellung Nord, German stronghold in Denmark. Memorial (Denkmal) for  the German Blinker WW1, Sicherungsstellung Nord, German stronghold in Denmark. Memorial (Denkmal) for  the German Blinker

 The Radio stations
There has been both mobile and more permanent radio stations.
 We know of these six:  Tamdrup Höj west of Aarösund,  Haderslev west, Knivsbjerg, Rödekro, Geestrup, Toftlund and the Zeppelin base in Tönder.  
Tamdrup Höj, Tönder og Rödekro we know was permanent stations.
Rödekro had 5 large antennas of timber, at a height of 85 meters. Later these were taken over by the
 Danish Army and used elsewhere. Two antennas in Viborg, two in the Ryvangen at Copenhagen and
 one in Odense (cut in two half’s)

  WW1, Sicherungsstellung Nord, German stronghold in Denmark.Telegraph Station Rödekro                  WW1, Sicherungsstellung Nord, German stronghold in Denmark. Radio Station Corps Level
             Telegraph Station Rödekro.                                                 Radio Station, Corps level.
        (One of the antennas is missing)


 The Railways

 At the time rail roads was the fastest transport for the heavy equipment.
 Long before the outbreak of the war, preparations were made in the area.
 Already when the rail road was constructed, platforms for the loading of heavy military equipment were
 At Over Jerstal and Skärbäk very long ramps were made.    

  WW1, Sicherungsstellung Nord, German stronghold in Denmark. Military Train
                                             Military locomotive

 The floodings
 Large flooding was prepared in front of the defence line.
 We know not much about these planned flooding, except for the 16 constructions that were left in 1920.

 We now nothing about which or how large areas, or how long time was needed.