Aside from the stridently 1970s soundtrack and an apparent need by the narrator to instill in us a feeling of "ooo, budo is scary!" an really excellent movie which I sought out again about 20 years after first having seen it. I also found it at www.budovideos.com
How about the younger teacher who practises cutting, iai, kendo and zen? Is that "Tomoo Koide" from the credits? Anyone have any information about him? Very impressive.