Meet the First Submarine Used in Combat
The Invention And Development of Submarines I THE GREAT WAR Special
The Bizarre History Of The Early Submarines | History Of The Submarine | Timeline
The First Hunter Killer Submarines; The R-Class of World War One
Submarines: From Raider to Wolfpack | Documentary | Ep. 01
Time Team Special: Lost Submarines of World War I | Classic Special (Full Episode) 2013
Anti-Sub Warfare in WW1 - From Hammers to Hunter-Killers
Why There Was Only 1 Submarine vs. Submarine Battle In History
How Submarines Became The Ultimate Silent Killer | History Of The Submarine | Spark
The History Of Submarine Warfare
Did you know that submarines were first used in warfare during World War I? They were used to attack
The Only Underwater Submarine Battle in History | February 1945
U-Boats of World War 1 - Numbers, Location & How to sink them (Part 1 of 2)
How They Made Submarines Into The Ultimate Weapon Of War | History Of The Submarine
Living Underwater: How Submarines Work
The Deadly Submarine Battles Of The Cold War | Submarines In Enemy Depths | War Stories
Why Germany Lost the Battle of the Atlantic (WW2 Documentary)
The First Naval Submarines Were Completely Useless (Until They Suddenly Weren't) - How History Works
How Allied Submarines Crippled Japan in WW2
History of Submarines for Kids | Bedtime History
