This website uses cookies to ensure you have the best experience. Learn more

To What Extent Did Breaking Code Jn 25 And Code Ultra Give Aid To The Allies In The Pacific And Atlantic Theatres Of World War Two?

4794 words - 20 pages

Extended Essay

Group 3: History

To what extent did breaking code JN-25 and code ULTRA give aid to the Allies in the Pacific and Atlantic theatres of World War Two?

Word Count: 3746

Abstract:
This extended essay has the subject of Code Breaking Intelligence. When studying the Second World War, the phrase ‘code breaking’ is not highlighted as a significant factor, so this investigation is to assess the contribution of code intelligence in the Second World War. The main question being: To what extent did breaking code JN-25 and code ULTRA give aid to the Allies in the Pacific and Atlantic theatres of World War Two?
The scope of this investigation is confined to two specific ...view middle of the document...

Word Count: 282

Contents:
Section Page
Introduction 4
JN-25 5
Battle of the Coral Sea 7
Battle of Midway 9
Death of General Yamamoto 12
Ultra 13
U-Boats 15
Conclusion 19
Bibliography 20

Introduction:
Many factors contributed to the Allied victory over the Axis powers of the Second World War. A significant factor that is rarely brought to attention in the study of the war is the role that code breaking intelligence played. Therefore, my investigation will attempt to discover to what extent breaking codes JN-25 and ULTRA aided the Allies in the Second World War? What is known is that the intelligence from these codes was used during the war, but was it valuable to the Allies and did they have an effect on the outcome of the war? The first code was the Japanese JN-25 broken by the Americans and used during the Battle of Coral Sea and the Battle of Midway in the Pacific Theatre. The JN-25 intelligence also contributed to the death of General Yamamoto over the Solomon Islands. The second code was the German ULTRA deciphered by the British and used in their fight against the threat of U-boats in the Atlantic Theatre. In this paper I will discuss the codes that were predominately broken, the situations in which this intelligence was adopted and analyse if the breaking of these codes had an effect on the outcome of the war and if it was beneficial for the Allies.

JN-25
Japanese expansion was an ever growing threat to the Americans, and ultimately the Allies. The Japanese, situated on their island off Korea, were constantly in need of resources due to the supplies being exhausted within their own borders. The very enticing situation of the Philippines, which was very rich in oil sources, was Japan’s next target, the only thing that was hindering the efforts of the Japanese was the ‘sleeping giant,’ more commonly known as the United States. The U.S. Navy was extremely powerful and if the Japanese intended to acquire the Philippines they needed to eliminate America’s seaborne threat. The plan to attack Pearl Harbour derived from this need, as the commander of the Japanese Fleet General Isoroku Yamamoto planned and initiated the surprise attack on Pearl Harbour with the goal of targeting American carriers. The Japanese victory was limited, as most of the Pacific Fleet was destroyed, but they failed to sink American carriers, as they were not present at the time of the attack. Not only did this decrease the naval threat, it also significantly lowered the moral of the Americans.
This was changed by the breaking of the Japanese code JN-25, which came to be known as the turning point of the war in the Pacific. In 1939 the Americans came across a new Japanese code that Washington code breakers could not decode; they dubbed it JN-25. JN-25 was the 25th Japanese Navy code that the Allies had encountered. This cipher was purely for the use of...

Other Essays Like To What Extent Did Breaking Code Jn-25 and Code Ultra Give Aid to the Allies in the Pacific and Atlantic Theatres of World War Two?

Using the Evidence of Suetonius and Res Gestae, to What Extent Did Augustus Rely on Republican Precedent and Tradition in the Settlement of 31 and 23 Bc

4218 words - 17 pages maintaining his superiority. Augustus made the transition from Republic to Empire in a number of ways that did not cause uproar or result in anarchy for Rome and her Citizens. Augustus had first been made a member of the senate under the consulship of Gaius Pasa in 43 BC, this was where were he first received his imperium. Augustus then became a consul in 32 BC when Rome was on the brink of a Civil war, yet he did not assume solitary power and still

To What Extent Do You Agree That a Revolution Happened in Germany at the End of World War I

671 words - 3 pages To what extent do you agree that a revolution happened in Germany at the end of World War I In Germany between 1918 and 1919 there were major political changes. They went from being an autocracy to a democracy. A revolution is defined as a forcible overthrow of a government or social order for a new system. It was called a revolution for numerous reasons. On October 29th 1919, a mutiny started to spread near Kiel because sailors refused

To What Extent Is Germany Responsible For The Start Of World War One?

2282 words - 10 pages part of Bosnia-Herzegovina, which only managed to anger Serbia even more and deepen the Russo-Serb alliance. The Bulgarian crisis made it clear that Germany did not have Russia's best interests at heart and destroyed any potential alliance between the two countries. After the Second Balkan War in 1913, the strategic position of Austria Hungary was severely weakened and it depended strongly on Germany for its survival. The historian Martel has said

Managerial Accounting and the Code of Ethics

3338 words - 14 pages their assets and profits, they did it anyway to pad their own pockets. Today, there are several organizations in place to monitor and emphasize the importance of ethics upon their member accountants, while also holding them to the highest standards of morals and integrity (Deese, 2014). If members do not comply with the ethical requirements of their member organizations, they will potentially face losing their accounting license as well as their

The Code of Ethics and Evaluation

759 words - 4 pages financial fraud in history. His network of investors included many prominent people from the financial world as well as the social elite. Madoff’s criminal career came to an end in 2008 when the recession developed. His supply of available funds began to diminish, and he was no longer able to pay his investors. Madoff was subsequently arrested, prosecuted, and sentenced to one hundred and fifty years in prison. The authors also discuss the

Culture And The Heroic Code

544 words - 3 pages many kids. Daniels selflessly saved the lives of others even though his own child's life was in danger. In my opinion it's hard to imagine a better example of a hero than this one.When I read about the actions of Officer Daniels, it made me stop and think about what a hero is really made of. Before hearing about this event, I had shared some of the same views of a culture that makes heroes out of undeserving people. I now see heroism in a different way. The acts of Officer Daniels has shaped and changed the culture that I call my own.

To What Extent Were Ideologies Important in the Bringing of the Cold War?

1597 words - 7 pages a superpower, this race occupied quite a lot of their energy and power. This was underlined by the race to the Atomic bomb and the Baruch plan (mentioned earlier in the essay). Questions on the birth of the Cold war are asked but I would consider that this one has started after the obtention by the USSR in 1949 of the atomic bomb. This weapon has already been the reason of conflicts between the allies after the Second World War with the

To What Extent Did The Movie, The Tuskegee Airmen, Actually Portray The Factual Nature, And Accurate Events Of The Real Tuskegee Airmen?

3779 words - 16 pages experiences of the first African American pilots that fought in the U.S. Army Air Corps. Surrounding the character lieutenant Lee, the movie follows the airmen from their initial training at Tuskegee in Alabama through their combat assignments during World War II. With exact epoch air-combat footage and military planes, the film illustrates the racism that the pilots endure throughout the entire movie. For example, the airmen are forced to give up

In What Ways And To What Extent Did Constitutional And Social Developments Between 1860 And 1877 Amount To A Revolution?

1057 words - 5 pages constitutional issue of Nullification and sessiondebated back in the day of the Virginia Kentucky resolutions and Hartford Convention.He resolves that it is not within the states power to cede and brings the nation to war. Theeventual victory for the North would bring about one of the greatest changes in history;the Emancipation Proclamation that forever ended slavery and changed the southern wayof life.With Slavery no more and a Southern society in

To What Extent Did The US Deterrence Successfully Contain Communism?

1237 words - 5 pages to have been the most effective compared to other methods and policies.After receiving the Long Telegram, Truman became even the more concerned about containing communism. However, it was not until March of the next year that he made his policy clear. On March 12 Truman made a speech as a response to the UK's request of aid in dealing with the Greek civil war, where communists were taking over the country. In Truman's speech he announced that they

Navajo People And Why Their Culture Was Pivotal To Changing The Fate Of The Allies

739 words - 3 pages are proof that we can utilize our community and our upbringing to influence our professional lives impacting the world around us with our knowledge and ability to learn. We now know who the Navajo people are and why their efforts were pivotal to the allies’ success in World War 2. The 29 original tribesmen of the Navajo code talkers remind all of us that our experiences, cultures, and combined differences contribute to our success as a global

Related Papers

World War Two – Europe And The Pacific

701 words - 3 pages World War Two – Europe and the Pacific 1. The League of Nations was an inter-governmental organization founded as a result of the Treaty of Versailles in 1919–1920, and the forerunner to the United Nations. At its greatest extent from 28 September 1934 to 23 February 1935, it had 58 members. Its purpose was to make sure future war was avoided. Its members were the countries that participated in the war. 2. The Manchurian Crisis On the

How And To What Extent Did War And Violence Contribute To The Definition Of Chivalry As Both An Historical And Social Phenomenon?

1934 words - 8 pages How and to what extent did war and violence contribute to the definition of chivalry as both an historical and social phenomenon? It is largely acknowledged by historians that, while it is difficult to be definitive in the meaning of chivalry-with Maurice Keen believing it to be a ‘word elusive of definition’- it came to denote the culture of a martial estate which ‘regarded war as its hereditary profession’. Thus, it could be considered that

To What Extent Did Stalin Transform The Society And Economy Of The Ussr?

2063 words - 9 pages To what extent did Stalin transform the society and economy of the Soviet Union? Joseph Stalin ceased power after the death of Lenin in 1924; by 1928 Stalin was a prominent figure in the Communist party and was ready to implement his transformation of the USSR. He transformed the Soviet Union to an immense degree; he brought about total change. Stalin introduced a command economy after the introduction of Socialism in one country; the command

To What Extent Was The Impact Of The First World War Responsible For The Downfall Of Tsarism In March 1917?

1720 words - 7 pages To what extent was the impact of the First World War responsible for the downfall of Tsarism in March 1917? In March 1917, Nicholas II abdicated and brought Tsarist’s three hundred year reign to an end. The issue of the Tsar’s downfall divides historians with two different viewpoints. The first perspective is that Russia was making progress, however it was solely undermined by the First World War in which the war caused massive losses, poor