WWI The First Modern War: The Germans Engage In Unrestricted Submarine Warfare | History

Meet the First Submarine Used in Combat

The Invention And Development of Submarines I THE GREAT WAR Special

German Submarine Warfare in World War 1 I THE GREAT WAR Special

The History of the Submarine Before World War 1

The Bizarre History Of The Early Submarines | History Of The Submarine | Timeline

U-Boats of World War 1 - Numbers, Location & How to sink them (Part 1 of 2)

HMS E11: The Most Audacious Submarine of WW1

Submarine Warfare WW1 vs WW2 - Differences & Commonalities

The Ultimate Submarine Of World War One: Germany's Project 50

The Disastrous Attempt To Reach The North Pole In A WW1 Submarine | Frozen North | Timeline

The INSANE Invention of The Submarine | The History and Evolution

First Underwater Movie | Who Created and When? #ww2 #uboat #submarine #underwatercamera

World War 1 (All Parts)

WW1 | From War to Peace ✌️ #ww1 #submarine #armisticeday #history

Submarines: From Raider to Wolfpack | Documentary | Ep. 01

Fantastic German WWI submarine film (1914-1918)

Anti Submarine Warfare and Tactics in World War 1 I THE GREAT WAR Special

Anti-Sub Warfare in WW1 - From Hammers to Hunter-Killers

Submarines, Dreadnoughts and Battle Cruisers - The Navies of World War 1 I THE GREAT WAR - Special