Godwin Sea Battery
Become a Patron! https://youtu.be/n8MyzAqKqmU Godwin Battery is from the first world war but is slowly slipping into the Sea.
Second World War
Sound mirror
Become a Patron! Sound mirrors were developed in the early 20th century to detect enemy airships. https://youtu.be/hM-f084gr_Q Here is an...
