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Bundle of 3 - World War II - Breaking the Military Codes

Bundle of 3 - World War II - Breaking the Military Codes
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1 MB|58 slides
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This is a bundle of 3 highly animated, power point presentations on World War II - Breaking the Military Codes. All three presentations together number 58 slides. Each of the presentation slides are editable so you can change them to fit your individual needs.

Bletchley Park was probably Britain’s best kept secret. The secrecy surrounding all the activities carried on at Bletchley Park during World War II was of vital importance to national security and ultimate victory. An organization called the Government Code and Cypher School (GC&CS) studied and devised methods to enable the Allied forces to decipher the military codes and ciphers that secured German, Japanese, and other Axis nations communications.

Bletchley Park ushered in the birth of the “information age” with the creation of the code breaking processes enabled by machines such as the Turing/Welchman Bombe, and the world’s first electronic computer, Colossus.

The Codebreakers made a vital contribution to D-Day in other ways. The breaking of the ciphers of the German Secret Intelligence Service allowed the British to confuse Hitler over where the Allies were to land. His decision to divert troops away from the Normandy beaches undoubtedly ensured the invasion's success.

Collaboration with the United States at Bletchley Park, not only turned the tide of World War II, but lasted through the Cold War and continues today. Bletchley Park is a treasured heritage site designed to preserve the important story of the Code breakers during World War II. But even as the Allied troops waded ashore, a new threat was looming and attention was being given to the role of the Codebreakers in the post-war era.

Power point #1 is entitled, World War II - The Codebreakers of Bletchley Park and contains 22 slides and covers the following:

Britain’s Best Kept WW II Secret
The Information Age
Captain Ridley's Shooting Party
The Codebreakers
Their Mission
Breaking Enigma
First Breakthrough
Intelligence Reports
Intercepts to Action
The “Y” Service
Round the Clock
Breaking the Code
Winston Churchill Directive
Monitoring the Japanese
North Africa Campaign
Strategic Ciphers
D-Day & Post War Era
End of Presentation

When one thinks about cryptography or encryption in World War II, the first thing that comes to mind is the Enigma Machine used by the Nazis, whose code was broken by the Allies and used as a secret tactical advantage. But what many people don’t know is that just before World War II, the Japanese also developed a series of encryption devices that improved upon the Enigma Machine and were used to transport their top level military secrets. United States intelligence was able to crack the Japanese Purple Machine.

The Purple Machine was much improved over the German Egnima Mchine and the previous Japanese red Machine. The key changed every day, code breakers would not be able to find patterns in messages sent over several days. The daily key would be inputted into the device by the arrangement of the switchboard and rotors. The switchboard contained 25 connections, which could be arranged into 6 pairs of connections, yielding over 70,000,000,000,000 possible arrangements which would determine the method of encryption.

After a great effort by U.S. cryptanalysis the code was broken and used against its makers, tracking Japanese Naval troop movement as well as other military communications. Unlike the Red Cipher, the U.S. tried taking full advantage of this by keeping it a well-guarded secret from the Japanese and its allies so that the messages would continue to be sent in the broken code.

Power point #2 is entitled, World War II - Breaking the Japanese Military Codes and contains 17 slides and covers the following:

The Purple Machine
Improved Machine
Machine’s Operation
Method of Encryption
Hard to Crack
Seizing Messages
Breaking the Code
Friedman & Others
Frances Raven
Tracking Messages
Many Codes Broken
End of Presentation

Communication is essential during any war and World War II was no different. From battalion to battalion or ship to ship - everyone must stay in contact to know when and where to attack or when to fall back. If the enemy were to hear these tactical conversations, not only would the element of surprise be lost, but the enemy could also reposition and get the upper hand. Codes (encryptions) were essential to protect these conversations. Though codes were often used, they were also frequently broken.

In 1942, a man named Philip Johnston was convinced a code based on the Navajo language would be unbreakable by the enemy. The son of a Protestant missionary, Philip Johnston spent much of his childhood on the Navajo reservation. He grew up with Navajo children, learning their language and their customs.

As an adult, Johnston became an engineer for the city of Los Angeles but also spent a considerable amount of his time lecturing about the Navajos. Then one day, Johnston was reading the newspaper when he noticed a story about an armored division in Louisiana that was attempting to come up with a way to code military communications using Native American personnel.

Power point #3 is entitled, World War II - The Navajo Code Talkers and contains 19 slides and covers the following:

Communication is Essential
Philip Johnston
Johnston’s Idea
Language Concerns
“Pilot Project” Set Up
Getting Started
Placed in Combat
Johnson Trains Recruits
The Code
Captain Stilwell’s Suggestions
Always Spoken
On the Battlefield
Body Guards
End of Presentation

This is one of many bundled power point presentations I offer in my store under the heading....World War II.
Total Pages
58 slides
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