Unrestricted submarine warfare is a type of naval warfare in which submarines sink merchant ships such as freighters and tankers without warning. The...

Submarine warfare is one of the four divisions of underwater warfare, the others being anti-submarine warfare, mine warfare and mine countermeasures....

to any submarine. Austro-Hungarian Navy submarines were also known as U-boats. U-boats are most known for their unrestricted submarine warfare in both...

around England. In January, before the declaration of "unrestricted submarine warfare" as the submarine blockade was called, 43,550 tonnes of shipping had...

of unrestricted submarine warfare and the introduction of submarine-launched ballistic missiles, which greatly increased the lethality of submarines. At...

killing her." On 4 May 1940, in response to Germany's intensive unrestricted submarine warfare, during the Battle of the Atlantic and its invasion of Denmark...

deportations of Armenians, a major component of the genocide. Unrestricted submarine warfare was instituted in 1915 in response to the British naval blockade...

crimes charge of ordering unrestricted submarine warfare, Dönitz was found "[not] guilty for his conduct of submarine warfare against British armed merchant...

abandoned in favour of resuming commerce warfare. Renewed orders in October suggested that unrestricted submarine warfare may come at some point in the future...

Zimmermann sent the telegram in anticipation of the resumption of unrestricted submarine warfare by Germany on February 1, which the German government presumed...

buildup was complete, Germany's new military leadership waged unrestricted submarine warfare on allied shipping, which they claimed would defeat the British...

the Japanese economy. The Navy adopted an official policy of unrestricted submarine warfare, and it appears the policy was executed without the knowledge...

naval bases and defended by shore batteries. [citation needed] Unrestricted submarine warfare was instituted in 1915 in response to the British naval blockade...

bombing raids. On 4 May 1940, in response to Germany's intensive unrestricted submarine warfare, during the Battle of the Atlantic and its invasion of Denmark...

of fuel and food in Germany. Berlin then decided to resume unrestricted submarine warfare. The aim was to break the transatlantic supply chain to Britain...

declared maritime war-zone around the UK, three months after unrestricted submarine warfare against the ships of the United Kingdom had been announced by...

World War I, who became famous for his December 1916 memo about unrestricted submarine warfare against the United Kingdom. He was a recipient of Order of the...

navy adopted unrestricted submarine warfare,[citation needed] generally giving no warning of an attack. During the war, 360 submarines were built, but...

loans. Bethmann Hollweg fought against the implementation of unrestricted submarine warfare but in the end bowed to pressure from the military and the conservatives...

The Submarine Warfare Insignia (usually known as '"Dolphins"') are worn by qualified submariners. United States Navy Officers and Enlisted Sailors wear...

German army.: 163  Articles that attempted to justify German unrestricted submarine warfare as an unavoidable consequence of the Allied blockade of Germany...

in depth and camouflage, German infantry could be conserved. Unrestricted submarine warfare and strategic bombing would weaken the Anglo-French as the German...

which specifically forbade any such attempt and ushered in unrestricted submarine warfare for the remainder of the war. The B-24 pilots mistakenly reported...

the crews of captured vessels, and are contrasted to unrestricted submarine warfare where submarines attack without warning and do not act to protect crew...

the navy's warfare mission. URL officers include officers from the Surface Warfare, Submarine Warfare, Naval Aviation, and Special Warfare communities...

responsible for sinking RMS Lusitania, which was sunk as a result of unrestricted submarine warfare and is often cited among the reasons for the entry of the United...

unrestricted submarine warfare, as with privateering, the German U-boat campaigns of the First and Second World Wars, and the United States submarine...

shortages, the government resumed unrestricted submarine warfare in February 1917. They calculated that a successful submarine and warship siege of Britain...

of the British, Germany expected a similar response to its unrestricted submarine warfare. The Battle of Jutland in May/June 1916 was the only full-scale...

retribution against Japan, Roosevelt promulgated a new doctrine: unrestricted submarine warfare against Japan. This meant sinking any warship, commercial vessel...