Submarine warfare is a military tactic used by many nations where submarines are used to attack enemy ships or as a direct deterrent. This was used extensively by the Germans during World War II.
Mainly commerce raids on allied convoys across the Atlantic. The main idea was to sink as much commercial and munitionary goods as possible with the aim of reducing supply and eventually starving Britain into surrender.
Unrestricted submarine warfare is when submarines attach and sink other vessels (ships, freighters, tankers) without warning. Germany freely used unrestricted submarine warfare in WWI, and after that time, the rest of the world tried to have submarines abolished.
Germany practiced unrestricted submarine warfare.
Well, there is no "The" underwater warfare, but there is underwater warfare. Underwater warfare is battle or warfare that takes place under the ocean, like in a submarine.
"Guerre de Course"; Commerce Raiding.
Unrestricted Submarine Warfare.
Germany's return to unrestricted submarine warfare.
Enemy surface ships are the main target of submarine warfare
Germany hoped that submarine warfare would lead to war.
Anti submarine warfare
Germany's submarine warfare was unrestricted. These attacks led to World War I.
USA
submarine warfare
Submarine warfare has existed since the early 1900's, and continues to this day. Though the last ship sinking by a submarine was in the Falklands War, the evolving missions of submarines have taken submarine warfare well beyond just sinking ships and submarines.
unrestricted submarine warfare
Germany's unrestricted submarine warfare
Anti-Submarine Warfare.
The Sea people
it was Germany.