History of Submarine Combat

WWII: Submarines

Article: WWI Submarines

The link below is to an article that reports on sunken submarines along the British coast.

For more visit:
http://www.spiegel.de/international/germany/british-archaeologists-explore-wwi-submarine-graveyard-off-uk-coast-a-911648.html

Article: Submarines in Early US History

The link below is to an article that looks at early submarines from the US War of independence and the Civil War.

For more visit:
http://mentalfloss.com/article/48600/short-history-revolutionary-and-civil-war-submarines