https://www.worldwar1.co.uk/
https://www.omrs.org/
https://ww2talk.com/index.php
https://www.worldmilitariaforum.com/forums/
https://www.greatwarforum.org/
https://forum.axishistory.com/viewforum.php?f=110
http://www.worldwar1.com/
https://encyclopedia.1914-1918-online.net/
https://ww1.nam.ac.uk/
https://www.nationalarchives.gov.uk/first-world-war/
https://www.iwm.org.uk/collections/search
