Danish version 

The Author  
 Map and Overview
Fortification overview

Defence of Copenhagen
The Persons behind
The  Mobilisation 1914
Attack against Denmark

 The Northern Defence Line
The Forts
The Batteries
The Flooding
The Positions

 The Naval and Coastal Forts
The 1. Defence Line
The 2. Defence Line
The 3. Defence Line

 The Western Defence Line
The Principles
 The Profile
The Caponiere
The Batteries
The Storing Facilities

 The Tune Position
Modern Warfare
The Aerial War
The Position
The Mosede Fort
The Foxholes
The Galleries
The Trenches     
The Artillery
The Air Defence    
The Camps and Barracks
Other Facilities
After WW I
The Present Remains



The Fortifications of Copenhagen

The Naval Forts and Coastal Batteries in The first Defence Line


  Just as many political and military doubts there were about the ground defence line, everybody agreed in the necessity of a naval defence line. The experience from 1802 and 1807, where Copenhagen was forced to surrender from the seaside, made it clear that this was the weak point of the city and the country.
  The Coastal Defence:
An inner line of the three old forts and batteries:
The Naval Fort "Trekroner"
The Naval Battery  "Lynetten" and
The Coastal Battery "Strickers Battery", which was reconstructed.

Furthermore three new constructions were made:
The Coastal Battery
"Kalkbraenderi Battery" 
The Naval Fort”
The Naval Fort "Proevestenen"


              The Naval Fort "Trekroner"