Anti-invasion Defences Planned or Built – 1914 to 18

 
Early in the First World War anti-invasion defences were built, and the batteries listed in the previous section had their landward defences put in place or extended.

location of batteries and planned defences around the Forth

There is very little evidence – physical or photographic – to confirm how many of the defences, beyond the gun batteries and defence lights – were actually built.

It is possible that they were only lightly manned by locally based troops. However, the fact that they were mapped in 1915–16 suggests that the plans were not abandoned.