I'm not sure who wrote this, but I found this quote among some old kendo learning literature on "Mei-kyo-shisui" my dad kept from decades...

It's been great to see the growth in the dojo and all the various kendo experiences that we've shared in the past year. A lot of those...

Kendo 101: Kiai refers more to our "spirit" where as kakegoe is actually the yell. I'm not sure why sensei scream "KIAI!" to tell...