This website is easy to compare different ciphers from different countries.Like the purple cipher of Japanese or the US army M-209 cipher.
I learnrd in WWII,every countries had each special codes to write some importamt information.
If a country could break the codes from the others, it would control the battle.
the code machine of Japan,they always called it“purple cipher”http://www.history.navy.mil/faqs/faq61-2.htm
This website is a little difficult to read because there isn't any pictures can help me to learn.
However,this website is also good.
I learned the US usually used Indian's language to make the code.If you didin't understant that special language,you couldn't break it .So the code of the US didn't broken by another countries at that time.
http://translate.google.com.tw/translate?prev=hp&hl=zh-TW&js=n&u=http%3A%2F%2Fwww.history.navy.mil%2Ffaqs%2Ffaq61-2.htm&sl=en&tl=zh-TW&history_state0=
This is a webpage from the same website,but I think it is useful for me to learn more ,so I post it.
I learned at that time,Indians were really important.There are some Indians of the US who helped the army to write the code in this website.According to the introduce of them, I know that they all were the greatest hero of Allies.
I can't find much information about “code breakers”,so I just find some website about codes makers .....
