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Unrestricted submarine warfare is a naval war tactic in which the submarine attacks merchant ship (or any ship not in the navy) without warning. Germany used this tactic on American vessels at the start of WW1, and that is a major reason that the US joined the war effort against the Germans.

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Q: What was the unrestricted sub warfare?
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Related questions

How did the war have anything to do with the US?

lusitania sinking, unrestricted sub warfare, Zimmerman telegram to Mexico


When was Unrestricted Warfare created?

Unrestricted Warfare was created in 1999.


How did Germans warn people abut unrestricted submarine warfare?

They didn't for unrestricted warfare. For restricted warfare they surfaced, got out a loud speaker and addressed the ship's captain. Such as, "You have 15 minutes to evacuate your vessel, then your ship will be sunk." Or...for the wise and experienced sub skipper (sub captain), "you have 15 minutes to evacuate your vessel, then we will sink your ship. IF you transmit any messages commencing now, we will sink you immediately!"


What was one unrestricted warfare development that led to US involvement in World War 1?

unrestricted submarine warfare


The united States entered World War 1 largely over the issue of?

unrestricted submarine warfare


German U-boats break the rules of the high seas?

Generally so, for sinking civilian vessels without warning (aka unrestricted sub warfare).


What was major factor in the decision US to enter world war 1?

Germany's unrestricted submarine warfare


Who used unrestricted submarine warfare?

it was Germany.


What part did the lusitania play in World War 1?

One of the first instances of lost US lives in WW1, and introduced the US to unrestricted submarine warfare; as well as a public cry against UN-restricted sub warfare.


Where did most unrestricted submarine warfare occur?

US subs sank Japanese vessels in the Pacific & German subs sank British/US vessels in the Atlantic. It might be a toss up, if it weren't for the fact that: 1. That's all the DKM did was sub warfare (after the US got into the war). 2. The USN was doing alot more than sub warfare; they were fighting cruiser, destroyer, PT Boat, Battleship, and Aircraft Carrier warfare. Consequently, US subs did alot of sinking...but were alot smaller sub force than the DKM (German Navy). The Atlantic most likely saw more unrestricted sub warfare. The Atlantic was a "Guerre de Course," a war of commerce raiding-NOT a battle between surface warships.


Most of the unrestricted submarine warfare occurred?

UN-Restricted sub warfare was conducted in both WWI & WWII, & in all oceans & by all major combatants (US, Japan, Germany, Britain, Russia, etc.): Atlantic Ocean, Pacific Ocean, Indian Ocean, etc. Un-restricted sub warfare simply meant, "not giving prior warning to the vessel to be sunk."


What Site of unrestricted submarine warfare?

Answers.com blocks the use of url's in answers given, so we can't help you. But google 'unrestricted submarine warfare WW 1" and those sites will appear.