Reddit reviews This is Kendo: The Art of Japanese Fencing

As mentioned, kenshi247.net has plenty of articles. One you probably will be interested in would be on shinai kyogi: http://kenshi247.net/blog/2012/02/02/shinai-kyogi/

The book "This is Kendo" contains a lot of history: http://www.amazon.com/This-Kendo-The-Japanese-Fencing/dp/0804816077

One individual you may be interested in is Yukio Mishima. He was a Japanese writer/author, who was an extremist and really fought to bring back the "old Japanese ways". Mishima (who did kendo and iaido, though apparently wasn't very good) eventually attempted a coup, and then committed seppuku.

As an example, he wrote a short story about Kendo titled "Ken", which was made into a movie by the same name. The movie concluded with the main character committing suicide out of shame for his fellow club members. One particular quote uttered by the main character near the beginning of the movie, upon learning that one of their classmates committed suicide, was: "only a coward or a very brave man is able to kill himself".

• https://kendoinfo.wordpress.com/2012/10/22/yukio-mishimas-kendo-history/
  
• http://www.imdb.com/title/tt0366668/
  
• https://www.youtube.com/watch?v=hHuGsIJc1_A
  
  While it's not exactly on topic, you might want to angle this story as exactly the kind of thing that the Americans wanted to prevent when they banned many militaristic martial arts (thus the conversion of bujutsu into budo). Maybe link that with atrocious war crimes Japan committed in the past (e.g. Nanking).
  
  What's keisa-hitzone?